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I changed my water a couple days ago, and apparantly, it raised my calcium level. It is testing at 580ppm right now, this is a reef tank. What might this do to my tank? Should I do another water change with water that has a lower calcium level?

I am considering moving from my 24 gallon aquapod into a 125 gallon tank. I am wanting to put some acro's in it, and was wondering, roughly, on average about how many new branches I can expect in 6 months time on them. I am hoping that once they grow, I can sell some as they grow to offset the...

question for the masses... are there any corals that will not do well under a metal halide/actinic setup?

I have a 24 gallon nano, and I have recently put in a RBTA. I have the stock lighting that comes with it (2-32 watt 50/50 power compacts). Is this going to be ample light for the RBTA in the long run?

I just got this BTA tonight, and he has moved around a little, as I know is expected, but was wondering if this is normal, or something I should be concerned about... Also, I have another really small anemone in the tank ( 24 gallon), one that is attached to a shell, I have no idea what type...

Is this a long tentacle anemone or a condylactis?

I was just curious what people have found to be the best way to hold a screen on a powerhead. I have temporarily used ty-wraps, and I know they will not last.

i have a purple tip haitian anemone. in the past hour, its foot has started twisting up on itself, here is a picture...

without thinking i just put two cups of tap water mixed with my phytoplankton in my 24 gal reef/fish tank. What should i do/watch for etc.?

I believe that this is an Aussie Blasto Merletti?? Is this so? Also, it is not doing very good, and I would love some advice. It is in the top level of the tank, in a strong flow. . . Any advice would be greatly appreciated.

Was just curious if someone could tell me if this might be the beginning signs of ich on my clown fish? Any help would be appreciated