braden's Caribbean seagrass/mangrove aquarium

[braden]

For some years now, I've wanted to set up a seagrass tank. I had a acropora-focused reef tank in high school; but after tearing that down when I went to college, I wanted to try something different. So, next thing I know, it's 21 years later. Ouch.

But I'm finally in a spot in my life where I feel like I can do this and do it justice. So, here we go"¦

The tank is a 93-gallon Marineland frameless "cube", 30"×30"×24". It's lit by three AquaticLife 150W metal halide pendants with inexpensive 5700K bulbs in them.

About a week and a half ago, I added 280 lbs of CaribSea Ocean Direct Oolite and 60 lbs of uncured aquacultured Caribbean rock from KP Aquatics (a.k.a. Sea Life Inc.). The tank is still cycling; my ammonia levels have started to come down and nitrite is rising. At this rate, I figure I've got another couple of weeks until things stabilize.

So, pictures:

It looks a lot bluer in the pictures than it does in person; but the lights are a bit bluer than I expected. I will probably try some 5500K bulbs.

I deliberately got more rock than I'd need to improve my chances of retaining a diverse set of microfauna and seeding the sand bed more effectively. I'll get rid of 30-40% of it after the tank has cycled and it's fully cured. As I'll be growing seagrass, the tank will have mostly a sandy bottom (until it's covered by grass, of course ).

The sump is a 20-gallon high tank that I have partitioned with a compartment for the pump and a place for a foam block. The return pump is an Eheim Compact+ 5000. I intend for the biological activity in the tank to take care of just about all the filtration. As I'm going for a more nutrient-rich environment than a reef tank, I don't intend to use a skimmer.

I'm going for a South Florida/Keys seagrass/mangrove biotope with this tank. I'll have some macroalgae; but most of the vegetation will be vascular plants: turtle grass and red mangrove. I'll be trying to source the fauna from the general area of the biotope I'm trying to recreate. I'd like to add some seahorses once the tank is well-established; but I suspect the first fish will be a blenny or two. I might go for a watchman goby/pistol shrimp combination as well. I've thought about jawfish; but what I've read recently suggests they may be happier in a reef setting than a seagrass one. A small filefish or two is a possibility as well.

So, there it is. I'll post further here as things evolve.

 

[Michael Hoaster]

Nice! I love cube tanks. I had a 60 gallon cube as my first marine tank. It's hard to tell from the picture, but how deep is your sand? I think turtle grass (and mangroves) like a deep sandbed. From what I've read, they have huge roots, when established.

Sounds like you have a great plan!

 

[braden]

It's hard to tell from the picture, but how deep is your sand?

Yeah, the picture's really dark at the borders; and the way the light reflects internally off the glass, only the first inch or so of the sand gets illuminated. But there's 6-7" there. I am toying, nonetheless, with adding one more 40 lb bag of sand.

I need to do a better job of evening it out all around the tank. It's still higher on the left side as a side effect of how it got put in the tank; but it's rather difficult to even out with all the rock still in there.

 

[braden]

I was fortunate enough to acquire four Thalassia plants from a local gentleman who was having success with them.

Twelve more shoots are arriving tomorrow; so I'll be doing more planting soon.

The tank appears to be nearing the end of its cycle period. Ammonia is negligible; nitrite has already peaked and is back down to 0.6 ppm; nitrate is at 7 ppm.

With all the plant life I'm adding, I feel like I need to start adding some animals to feed so that the plants will have a sufficient nitrogen source. I'm also starting to see a bit of hair algae (a few tufts are visible in these pictures), though it's still manageable.

 

[Michael Hoaster]

Wow, those are nice! Jealous!

 

[JLynn]

Very nice! Will this be a strictly planted tank? If not, there is this beautiful little sponge called Chalinula molitba that, according to the pictures I found on The Sponge Guide (http://www.spongeguide.org/speciesinfo.php?species=93), is found in Thalassia testudinum meadows in the Keys and the Bahamas. It is very, very pretty, and seems to stay fairly small, which makes it a good candidate for an aquarium. It also grows on the sand, right in the midst of the seagrass, which is a departure from the norm.

If you are at all interested in sponges, I highly recommend you give the Sponge Guide a look; it has over 200 Caribbean sponges listed, complete with pictures and some biological info. I was thrilled to find it. If nothing else, the pictures give you a good idea of what different Caribbean biomes look like, which could be very useful for you, if this is going to be a biotope.

 

[braden]

Very nice! Will this be a strictly planted tank?

No; it's a biotope tank. So, anything that occurs within a Caribbean/South Florida seagrass bed and is workable in a 93-gallon aquarium is a candidate.

If not, there is this beautiful little sponge called Chalinula molitba that, according to the pictures I found on The Sponge Guide (http://www.spongeguide.org/speciesinfo.php?species=93), is found in Thalassia testudinum meadows in the Keys and the Bahamas. It is very, very pretty, and seems to stay fairly small, which makes it a good candidate for an aquarium. It also grows on the sand, right in the midst of the seagrass, which is a departure from the norm.

I like it. That's a great idea... Thanks!

I had not given a whole lot of thought to sponges. There are a few encrusting ones on the rocks that have survived the curing process, including a nice bright red one. But in the past I haven't had much luck with sponges. Of course, my previous experience was more than 20 years ago; and one of the more significant advances in the hobby since then is the availability of more and better foods for particulate feeders. So, sponges are probably worth another look.

If you are at all interested in sponges, I highly recommend you give the Sponge Guide a look; it has over 200 Caribbean sponges listed, complete with pictures and some biological info. I was thrilled to find it. If nothing else, the pictures give you a good idea of what different Caribbean biomes look like, which could be very useful for you, if this is going to be a biotope.

That is an excellent resource. Again, thanks!

 

[JLynn]

You're welcome!

No; it's a biotope tank. So, anything that occurs within a Caribbean/South Florida seagrass bed and is workable in a 93-gallon aquarium is a candidate.

In that case, I highly recommend checking out Guit's "Rose Garden" over on the Nano Reef forum (nano-reef.com, not RC's nano reef forum). It is an incredible little Floridian biotope with macro algae, several Manicina areolata, an Oculina sp., 2 masked gobies, a rusty goby, and a shrimp, all of which were collected from Florida or as hitch-hikers on Floridian live rock. Very inspiring. I am pretty sure Manicina areolata can be found in seagrass meadows, too.

 

[braden]

In that case, I highly recommend checking out Guit's "Rose Garden" over on the Nano Reef forum (nano-reef.com, not RC's nano reef forum). It is an incredible little Floridian biotope with macro algae, several Manicina areolata, an Oculina sp., 2 masked gobies, a rusty goby, and a shrimp, all of which were collected from Florida or as hitch-hikers on Floridian live rock. Very inspiring. I am pretty sure Manicina areolata can be found in seagrass meadows, too.

Wow... That's a huge amount of coral to get "free" on live rock. Lucky bastard.

Nice tank.

I've got a little spot of something reddish that I think is coral on one of my rocks. The whole thing's about the size of a dime. It has pretty small polyps (if that's what they are), probably 1.5-2mm.

I've got some green star zoanthids and orange Ricordea en route. This is not going to be a polyp-heavy tank; but I wanted to add a bit of color. (I also need an excuse to start squirting a bit of food in the tank so that my plants can have a nitrogen source.) I'll be on the lookout for the M. areolata. Though my favorite in that tank is probably the Oculina.

BTW, I think I found the fish I really want for this tank once my grass bed is established: http://www.fishbase.org/summary/3073

Unfortunately, photographs seem a little hard to come by. The fish will probably be difficult to come by, too. I don't think they're especially rare; but their specialization means they're a poor choice for most aquaria.

 

[Amphiprion]

Tank looks quite nice! Seems like things are coming along well.

I don't think you'll have to worry about sponge growth. It will likely happen eventually, as long as the water isn't completely stripped. My tank has generated quite a bit of sponges--some growing right on the sand and glass. I also have a few tunicates that have taken off.

Also, as an aside, do check LA, as they have Thalassia seeds that are sprouted and ready to go. I haven't tried these personally, but seeds transplant much better than individual shoots.

 

[jimbob321]

[/QUOTE]

i would have been disappointed. see pic from there site.
there's not as much life on there.
i was going to place an order till i saw your pic.'s

 

[JLynn]

Well, there are several different "levels" of live rock that they sell. I believe that the "premium" live rock is what you posted a picture of. I don't know whether or not braden has the premium live rock, but if not, then that could be the reason for the discrepancy. You should probably check out reviews of them before dismissing them entirely.

 

[griss]

i would have been disappointed. see pic from there site.
there's not as much life on there.
i was going to place an order till i saw your pic.'s

Well, there are several different "levels" of live rock that they sell. I believe that the "premium" live rock is what you posted a picture of. I don't know whether or not braden has the premium live rock, but if not, then that could be the reason for the discrepancy. You should probably check out reviews of them before dismissing them entirely.

I'd be interested in knowing what rock Braden purchased from them as well. I'm considering buying one or two of their "10 lbs of Premium Cured Live Rock (Shipping Included)" packages to add some color and diversity to my tank. However, if Braden's rock is their Premium rock, I'll have to pass on that.

I know their rock get great reviews, so I'm assuming Braden's rock may be their cultured base rock.

 

[jimbob321]

OK in a month or so i'll be purchasing 10 lbs of "Premium Cured Live Rock" from K.P.
and 10 lbs "Premium Decorative Live Rock" from Gulf live rock.
i don't have herbivores to pick it clean,i have seen beautiful rock turn bare in a few months with a tang in there munching away at it.
i'll start a thread when i get the rock...

 

[Michael Hoaster]

Sounds like a plan, jimbob. I have purchased rock from Gulf Live Rock, and it was very heavily encrusted. If I ever add any live rock to my current tank, that's where I'll get it. I look forward to your thread!

 

[Michael Hoaster]

Braden, how's it going?

 

[guits]

Wow... That's a huge amount of coral to get "free" on live rock. Lucky bastard.

Nice tank.

Thanks! I stumbled upon this post while searching "manicina" (which obviously is my reefing "interest" if you've been to my thread on nano-reef...) and wanted to say hi. I've been a member of RC forever but have never posted. For my tank, I've been extremely lucky to collect a bunch of corals that we have here in the US which you can only obtain on aquacultured rock. I do have to say it took a bit of patience and lots of live rock orders, with a good bit of very excellent live rock without any coral hitchhikers being given away. I wouldn't say it was exactly "free" in that sense but I know what you meant

I think your seagrass tank is an awesome project and is looking great. I would love to someday have the space to do something similar, especially if I can ever source stargrass. Prior to my return to reefing, my interest was freshwater planted tanks and South American cichlids, so I would love to do a saltwater planted tank someday.

 

[braden]

[Apologies for the long absence; life's been busy.]

i would have been disappointed. see pic from there site.
there's not as much life on there.
i was going to place an order till i saw your pic.'s

I think the lighting washed out a lot of the color in the pictures. It's a bit more vibrant in person. That said, while I wasn't disappointed, I can't say I was overwhelmed, either.

The rock came with enough life that I saw my sand being colonized by worms within hours of adding the rock. I got a fair number of crabs, a pistol shrimp, a pencil urchin, and a nice feather duster worm. And that's just what survived the curing process.

My main goal with the rock was to add diverse microfauna from the region I'm trying to represent with this aquarium. It accomplished that. I appreciate that other buyers might not be looking for the same thing.

 

[braden]

I'd be interested in knowing what rock Braden purchased from them as well. I'm considering buying one or two of their "10 lbs of Premium Cured Live Rock (Shipping Included)" packages to add some color and diversity to my tank. However, if Braden's rock is their Premium rock, I'll have to pass on that.

I got their uncured rock. I do not think what I got was their "premium" rock.

I know their rock get great reviews, so I'm assuming Braden's rock may be their cultured base rock.

It was not that.

 

[braden]

Braden, how's it going?

Pretty well.

Three out of the four plants I got from the local gentleman who had it growing well survived; and all 12 of the seedlings I got from liveaquaria.com took root. Also, three small bits of Syringodium I received incidentally (attached to some Halimeda and Udotea) have survived and are slowly growing. Speaking of those macroalgae, they've really taken off in the tank. I started with a couple specimens of each; now, new ones sprout in the sand throughout the tank.

For a while I was unsure things were going to make it. All the plants lost a lot of leaves at first. But that subsided, they took root, and the tank stabilized. I had a brown cyanobacteria problem for a little while; but that subsided (eventually) with the addition of a protein skimmer (Eshopps S-120). I continue to have a bit of a hair algae problem; and I'm considering additional herbivores to manage it (perhaps a lettuce slug or two).

Recently, the aforementioned local gentleman decided to take his tank in a different direction; and aside from a few plants he transplanted to a smaller tank, I have inherited the rest of his turtle grass stock. :beer:

Last weekend I pulled a good portion of the rock out of the tank and planted the lot of it. I expect to go though the leaf loss process again with the new stuff; and some of the bits I planted probably won't survive (the extraction process was a bit traumatic). But at this point I have quite a few plants.

I'm going to start adding an iron/magnesium supplement soon. I'm not entirely satisfied with the growth rate of the stuff I already had; and particularly with the addition of the new plants, I think it's warranted.

I will post some pictures soon.