My Shark & Ray tank

A couple of years ago, I had a pair of specimen tanks built. In this one, I wanted to keep a shark and a couple rays. The tank is 48 X 48 X 28, made out of 1/2" acrylic. There is a 40 gallon sump/refugium below the tank. Equipment includes Lifeguard’s mechanical, chemical, sand filter & 40W...

Removed powerhead temporarily… reinstall?

When I installed the refugium last week I removed the powerhead because of the high flow that was coming out of the filter. I feel like I should put it back in, but I’m afraid of creating a turbulent environment for all the creatures. Keep in mind this is an AquaClear 70 modded into a refugium in a...

Water paramaters check..

Hi, Im new to this forum and reef tanks…Ive had saltwater FOWLR tanks but never got into corals so Im giving it a shot. OK so Ive had my tank up and running for about 4 months now…stock is minimum at the moment. Tank Specs are… 55g 4 x54w T5 lamps 1 36w acintic blue lamp 70lbs live rock 2...

Pink Sun Coral

See the rest here: Pink Sun...

Green spikey round "thing" in saltwater tank?

I have a green spikey looking round "thing" attached to a rock with threads that come from it and attach to other parts of the rock. It’s been growing for 3-4 months or so and now is a little smaller than a large gumball. Wondering what it is and if I should remove it. Here is the...