Oyster Reef Ecosystem Tank

Thank you McPuff and Heuristic! I plan on using a good bit of grout, and may thicken it up a bit for some of the thicker roots. I'd like to keep the foam to a minimum. I thought about using hydraulic cement, but went with grout instead. It's a big experiment for me, for sure. I'm hoping that there won't be enough foam to float the structure.
 
Here's an interesting video I shot the other day. I went to feed my invert 20g high tank, and noticed this freaky worm swimming fast around my tank. At first, I thought it might e a new species, but after doing some research on the net, it's probably one of the clamworms sporting a swimming reproductive phase. I read that they're mouthparts are useless at this stage, as is their digestive tract, and that they'll die after they've spawned. I think that is the case. If someone knows more, please post about it.

https://www.youtube.com/watch?v=XZVBUAAEIdI
 
Look what I found in my tank last night! I spend time each day watching this tank, and let me tell you that I thought that I knew what was going on at every inch of visible space in the tank. But, last night, right in front, I found a new plant sprouting up, and I think it is widgeon grass. For those that have followed my thread, you may remember that I've introduced this grass in my tank many times, and each time it has died off. The key to getting it to grow is to make sure it roots, and although, I tried to do that, it never worked. Well, now this sprout appears on it's own, and I couldn't be happier. It may be too early to ID it, because it could be another form of algae, but it sure looks like widgeon grass to me. So, I guess this makes my tank a sea grass tank now!!! If this stuff tanks off, maybe it can out-compete the other less desirable forms of algae and slime. Anyway, here's a pic of it, followed by a video of it and a general pan of the fish to show you how their doing.
IMG_0471_zpsvnrwmu83.jpg


Here's the vid:
https://www.youtube.com/watch?v=R4iOSieLAI8

Looks like that thing is going to end up being glass nem food LOL

Yeah, I watched this worm swim around the tank for about a half hour, and it stuck into that same ghost anemone about a dozen times, each time, wriggling itself free. I thought it might meet its doom eventually. I don't know what happened to it. But, it's my understanding that once they release their gametes, they die anyway.
 
Yeah, that looks like a sea grass to me! That would be so cool if it takes off! I'm crossing my fingers! Great vid too!
 
Thanks Michael (and Heuristic too). It would be really cool if it took off. Maybe my sand bed is just right at this stage to support grasses, and before it was nutrient poor? But, even if it only lives short term, it gives me hope that these grasses may work out once I get my build going and use a better light (and build the substrate using your methods or similar).

It doesn't take much to get me excited, LOL. A swimming worm...a blade of grass... :hmm5::lolspin::bounce1:
 
That really is the draw to me with reef tanks and stuff though, you constantly find new things that pop up. Coral growth, random hitchhikers all sorts of things(in your case, worms and grass). That's what makes it fun
 
Update on the roots:

I was able to work on my background and roots again this past weekend. First, I used a hot glue gun to secure all of the root structural pieces and fill in some of the smaller gaps. I may do more of this in the future.

After that, I used Beckett's Pond Foam to fill in the gap in the background between the center and left piece. It turned out well, so I'm pleased.
IMG_0482_zpsbpy6telz.jpg


Then, I used the spray foam on the roots to fill in gaps and add some bulk to the root structure. It was a messy process, and it expanded a lot more than what I think the directions stated, so I'll have plenty of carving and sanding to do to transform the structure from a bunch of pipe with blobs to a more realistic root structure. Overall, I'm pleased with the result. I've never carved this stuff before, so I'll have to experiment on what tools to use. Below are some pics of the roots after foaming.

The foamed root structure:
IMG_0483_zpsd5lqrowm.jpg


The knot:
IMG_0485_zpsha9yrrwg.jpg


The eroded root:
IMG_0484_zpsb8uzzwxe.jpg
 
Here's a vid from last week, not the best quality, but all of the critters poked their heads out to say hi:
https://www.youtube.com/watch?v=Kfe-8I--cvE

My FW build is moving along, slow but steady. I used spray foam to fill in some gaps and add some bulk (posted last time) and have since carved and sanded the foam. I got rid of a good bit of the expansion, to improve the look and texture, and to reduce the amount of foam overall to help keep them from floating.

Here is a before carving/sanding pic:
IMG_0483_zpsd5lqrowm.jpg


Here are some pics after carving/sanding:
IMG_0499_zpsfuh6yhn8.jpg

IMG_0502_zpsapfhcxj7.jpg


Fitted in the tank:
IMG_0495_zpslhslwfgc.jpg


The next steps will be to first, cover the pipe with plaster wrap to give the grout something to hold on to. Then, apply the grout for the final bulk and root shaping, including more carving for realism. After that, I'll paint the structure with Drylok mixed with cement dyes to get the coloration that I want.
 
Another cool vid! It's fun to visit your cast of characters. Did the little seagrass make it? I didn't see it. If not, my guess would be inadequate light. I know you have better lights for the cube.

Your root project looks great! I can't wait to see the final result. If I had one criticism, it would be that it's maybe a little large. I had the same issue with mine - it came out bigger than I expected. You'll make it work. Once you get the rest of the scaping done it will all come together.

What do you plan to put in this tank? Keep us informed!
 
Another cool vid! It's fun to visit your cast of characters. Did the little seagrass make it? I didn't see it. If not, my guess would be inadequate light. I know you have better lights for the cube.

Your root project looks great! I can't wait to see the final result. If I had one criticism, it would be that it's maybe a little large. I had the same issue with mine - it came out bigger than I expected. You'll make it work. Once you get the rest of the scaping done it will all come together.

What do you plan to put in this tank? Keep us informed!
Thank you Michael. The seagrass didn't make it, I think. My fish, or perhaps the crabs, uprooted it. I don't think that the fish would uproot a more substantial root system. I should have transferred it to my other tank. It was cool to see though.

As far as the roots go, they will serve the purpose of hiding a rather large and powerful powerhead. I had planned the size around this idea. Yeah, they're large, but with lighting, it should look nice with a shaded area too, just like my section of a stream undercut bank. Unfortunately, they hide some of the nicer parts of the faux rock. I can always choose to remove the roots though, because they won't be permanently affixed in the tank, if they become an eyesore or don't look good. I'm hoping for the best, LOL.

Leading to what will be in this tank...It's a native stream tank that will support minnows, shiners and darters found locally to me. I may or may not keep sculpins, madtoms, or small sunfish, as long as I have a plan to relocate them to our local public aquarium in place first. These latter fish tend to eat darters, and they're going to really be the feature fish of this tank.

Oh, by the way, I meant to tell you that I had your suggestions in mind when I was carving the foam off the roots, trying to get as much off as I could to keep them from being too buoyant. On the back side, I'd hollowed them out, nice and out of sight. From the front and sides, they look full.
 
No problem. No sense reading back, I'm happy to chat about it LOL. Basically, flow will be left to right looking at the tank, with the powerhead hidden under the roots at mid-depth. I have a cannister filter too, and the intake is hidden in the rock work, and the spray bar will trickle water over the top of the roots. I think that both current sources will mimic stream flow. It won't be completely unidirectional flow, of course, but I can justify that in my mind by calling it a stream eddy tank:rollface:
 
I lost one of the male naked gobies last night, found it dead in the front of the tank. There are no disease symptoms now, or in recent past. I ran water tests and everything looks good, zero ammonia and nitrite, for example.

I'm confused because the other day, the fish was eating out of my hand, and was very active. I have lots of dinoflagellates in the tank. Could that have been a problem if he'd eaten any of them?

I don't know their lifespan. This goby is a full adult, and we collected him as a 1" juvenile about a year and a half ago. Could it be just old age? Anyone know how long these gobies live?

All of the other fish and inverts are doing great.
 
My fished posed again for me, so time to share some pics again.

Male Striped Blenny (Chasmodes bosquianus):
IMG_0548_zps867cx6ev.jpg


A pair of male striped blennies challenging each other's territory:
IMG_0550_zpsqxoxldvo.jpg


A skilletfish (Gobisox strumosus), blending in:
IMG_0553_zpscnc1nr4d.jpg


Side view of a skilletfish:
IMG_0554_zps4sxphysv.jpg


Another angle of a skilletfish, and a female naked goby (Gobiosoma bosc) inside an oyster shell:
IMG_0556_zpsvgdpf7yo.jpg


Another male striped blenny peeking out from a crevice:
IMG_0557_zpszcskyknj.jpg


The queen of the tank, a female striped blenny:
IMG_0559_zpsd5jtvrrv.jpg


A handsome male naked goby.
IMG_0562_zpsthhwvwu4.jpg
 
Thank you Michael!

My next step with the root structure is to cover the remaining PVC pipe with plaster cloth, to add bulk and get rid of man made looking lines, and give the grout something to hold onto. I don't want it breaking off. I wanted to get that done this past weekend, but other things came up that demanded my time, so much so that I didn't even have much time to watch my fish.

After that, I may add some more structural detail, and then it will be time to apply the grout. The final step would be to seal it all in with Drylok with cement dye to give it a natural color, and to keep the pH from the grout from being an issue. The grout should give it sufficient weight to prevent buoyancy from the foam.
 
Back
Top