need help pls

Hello, A few months ago I found out that I have poisonous dinoflagellates. Every morning and night (when the lights came on and off) a lot of corals suddenly closed. And by closed I mean completely withdrawn. In the evening, corals closed faster and further than normal. After a few minutes they...

Hello everyone. got this for free from LFS today. Can anyone help me ID this coral? Thanks in advance

[Little bit of info/background]: I had this 16g tank running, empty, for months. It never had lights on, only sunlight, and I thought it was cycled based on the ammonia/nitrate being none or low. A couple weeks ago my poor clown was dying and I tried to save him, so I put him in this tank (the...

I have posted a few pics of my tank on here and I’ve gotten a pretty general consensus - it doesn’t look mature and I don’t seem to have enough algae for my pincushion urchin. So I’ve been leaving the white lights on for most of the day, only the blue at night. More algae started growing but...

was mixing ph buffer and kalkwasser.. by mistake, i put a cup of fresh mix ro di with one tbspn of kalkwasser into the tank. instead of the ph buffer. now my tank is so cloudy. did i crash my tank? or should i just WC?

It’s a black widow anemone that is hoasting a maroon clown fish. It has been in the tank for about 2 day and I also have another anemone in the tank that is really healthy could it be that the clownfish is being to hard with it

Hi guys! I just found this molt in my tank && it kinda looks like a mantis shrimp??? I'm not 100% sure though !

I have some fish in qt rn with ich or velvet and my blenny is acting up he was limp on the bottom but then started thrashing and went limp again I checked I didn't see any ich or velvet on him I'm afraid that he might've gotten stabbed by my foxface I stuck him in a net at the top of the tank...

Hey everyone! So we have a 13.5 g Evo Tank & for some reason the temapture is running EXTREMELY, EXTREMELY high! ( 86,85,83,82 degrees f) We unplugged the heater & the AC is running on full blast.. Any ideas on why this may be happening!?!?!? I just bought $150 worth of corals & I don't...