It's been a while and I've been very busy over the past month, not only with the setup of this aquarium but other things so I apologize for the delay in an update.
I received the second round of TBS live rock on April 15th.
I asked Rich for larger rocks and shelf pieces this round. I liked the live Pukani so much better than the Walt Smith 2.1 that I asked for all Pukani this time around. The Pukani has so much more surface area because of its structure there's no question it's the better rock. Now that all the rock has been in the tank for a month and a half I have also noticed that algae grew on the Walt Smith rock much more abundantly than on the Pukani. Not sure why, and I'll take current pictures of that later. The Pukani pieces Rich sent were HUGE! big, beautiful pieces with tons of life. A few of the pieces had flat sides so I used those for the top of my structures.
Here I just put in all the rock but haven't aquascaped anything yet. Based on the pieces I received my plan is two large rock islands with as much open under as possible.
Now I've started to position the rocks. From the left side you can see the large pieces which I positioned on top of smaller support pieces. This serves three purposes, to elevate the shelfs closer to the light, to allow more hiding and swimming space, and to allow for flow under the rock islands. I did not put an arch between the two islands, but I may do this at some point.
Here are some closer shots of the two islands.
Remember when I talked about 50 crabs in the first batch of rocks? It was much harder to shake out the crabs from these larger pieces. Here's one big guy who fell out onto the carpet before I put the rock in to the tank. Over a month later I can safely say there are likely 100+ crabs in my tank. Most of them porcelain which is a good thing, but there are still a lot of gorilla and unknown types. Over the past couple weeks I've been moving coral from my 120g into this tank and every day I will pull out a piece of coral where I see a crab hiding, and it's never a porcelain. I'm removing those to be on the safe side. I know there are some good crabs who will sit in coral, but my concern is it will be a bad one and he'll start eating it. I've tried the pop bottle method which has worked well for me collecting shrimp in the past, but I only end up with snails in it, the crabs haven't been biting. Also, whenever I see a gorilla or unknown in the rocks I try to grab him with forceps but they can be fast.
I have one big urchin and about 3 or 4 baby urchins that hitchhiked in and are doing well. I have one black striped Goby, my only hitchhiker fish, who has survived the cycle. I also have a lot of Pistol Shrimp, most of which I don't see. I did see one last night, and he was pretty big. Apparently Pistols also have not fallen for the bottle trick. They are loud as I can hear them clicking all the time. Babies will end up in the filter socks. Most of my sponges have died off despite my attempt to use KZ Sponge Power to keep them alive. I still have a few, mostly in lower light locations like under the rocks.
Over the past month and a half the tank has been going through a cycle of sorts. With all the "real" live rock I never had a large amount of ammonia, and my nitrites remained low to none. However my nitrates hit a very large spike, off the chart, and have now come down to about 25ppm. I've done a few large water changes and as of last week added chaeto and moved my GFO/carbon reactor in line. There was a large green algae growth spurt, especially on the Walt Smith rocks and a diatom bloom on the sand. Positioning of the pumps to increase flow over the sand has helped with the diatoms, but ultimately my nitrates have to come down. I'm going to do another large water change tonight, and maybe another this weekend. Coralline has started to grow on the Pukani which is helping.
I am almost finished moving my coral from the 120g to the new 260g. Nothing is glued in yet, I've been using holes in the Pukani to position everything until I know where the various pieces are happy. I moved some of the smaller frags about 3 weeks ago and am AMAZED at the difference in coloration and polyp extension, not to mention noticeable growth. I am 99.9% certain it is due to the Spectra MH/T5. When I pulled the pieces out of my 120 which has two Radion G3 Pros and two T5 as a lighting source, the pieces are pale when coming out of that tank and already deep rich coloration is appearing under the Spectra. I will show before and after photos in a couple weeks, although I suspect even more coloration and faster growth to occur over the next few months.
Once the last piece of coral is removed from the 120g I will move the fish. I have a pair of Melanurus wrasse that I'm hesitating to transfer. They, especially the male, are voracious eaters. They go after snails and I'm concerned they'll start eating the crabs. While it would be ok for the gorillas, I'd hate to lose the porcelains. Because of my current high nitrate issue I don't want to be feeding heavily and the fish will get hungry between feedings, currently 2x per day. I love the coloration of these fish, and they help by eating the bad things in the tank so I'm torn on what to do with them. Maybe I'll just risk losing the porcelains.
The pictures I posted are over a month old so I'll take some new ones of the tank and sump room. A lot has changed.