looking for answers

I recently dosed chemi-clean in my 5 ft 125 and put 13 scoops for a bad cyano outbreak. after 48 hours I noticed that the cyano was entirely unchanged since I dosed it, I don't have any other form of mechanical filtration, no filter sponge or carbon, just a protein skimmer. I put air stones and...

First post, I’m rather new to the hobby. I’ve had 20 gal tank for a year and recently upgraded to 40 gal. To accompany my two clownfish and I bought a blue eyed tang. When I brought him home I noticed he had a faint red spot that appeared to be internal. Either on his hepatic portal system, or...