Tank 2 months old - some questions

howardco99

New member
I have a 75 gallon tank that was setup with the package in early January. Second shipment 3 or 4 weeks later. The tank looks pretty good, but I have a few questions. Any general comments from from the crowd are welcome.

1) Anemones seem to be doing well. They eat seafood chunks and look healthy and active. They have moved around a few times but seem to have found locations that make them happy. The flower anemone was pure white when he arrived but now is looking kind of dirty. Is this from regrowing zoanthelle that was lost during shipment? There are several small tube anemones that are growing nicely. The condy is also doing well.

2) Cup corals look really good. Starlit corals are kind of mixed. A few small ones have totally bleached out, but larger ones seem healthy. Also have some brown zoanthid looking critters that are starting to get somewhat bleached out also, but then again some that seem to be doing great. Is this a fairly normal pattern or should I be worried?

3) I measure fairly high levels of phosphorus (~.5) and have never measured ph much above 7.8 or so. I used RO water and IO salt. Never any ammonia, a whiff of nitrite and some nitrates (2-5). I haven't been feeding anything except a few chunks of grocery store seafood to the anemones. I've read this might be a source of phosphorus. Does this make sense? Where else might the phosphorus be coming from? It's not from the water added to the tank.

4) Starting to get some real nice coraline algae growth. The tank (rock actually) is definitely getting more purple and pink by the week. No other algae, although I had a hair algae breakout after week 2 but the cleaning crew has done a great job on it. No visible green algae now.

So comments from the experts welcome. How do things sound? Anything to be thinking (or worrying) about?

thanks in advance.

PS. 4x96 PC (2 10k, 2 actinic), Red sea skimmer
 
(1) Yes, brown coloring is zooxanthellae returning.
(2) Picture?
(3) Can't get pH to 8.0? Interesting. 7.8 is at the low end of the normal range. I don't test for phosphates, but I don't have algae problems. If you don't have algae problems, I'm not sure you should be concerned about the phosphate reading.
(4) Caulerpa and other macroalgae have not started growing? They should, unless your critters are eating them up.

Any fish, or are you just maturing the rock as long as you can? Alkalinity & calcium? I've read that even in a non-reef setup, you want to check calcium once in a while to make sure your coralline algae gets to consume it.
 
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