bio balls

Used Brightwell Bio Bricks - 9 ea in Good Condition, 1 ea looks a little rough (it's the brick on the very top in the pic below). Purchasing Singles * $15 ea price + shipping (see below) * $12 ea price picked up Purchasing Entire Lot (10 ea) * $120 for entire lot shipped * $100...

Wow, I can't believe what I just did—looking for some reassurance. So, exactly 62 days ago, my DT caught ich. I completely dismantled the tank to pull the fish into QT with copper treatment. A few fish didn't make it, probably due to the copper and age, but the rest are healed and doing...

Say you lived in an alternate universe where reefers had so much extra space in a sump... What would be the argument toward or against filling it to the brim with bio media as opposed to having just enough to serve your bio load? Can too much bimedia cause a problem or challenge? Is more better?

Hello, I am looking to get a juvenile coral cat shark for my 75 gallon saltwater aquarium then move him to my 240 gallon. I have very little experience with sharks especially in smaller tanks. The 75 gallon where he will only be for a short amount of time has 15 lbs of live rock so he has room...

Good afternoon, Still preparing and setting up my WaterBox 25 Peninsula, and I’m planning to go bare bottom; I have ~20ish pounds of live rock and am close to filling it (have the saltwater ready + all equipment, just had a dilemma with the stand I purchased that caused delays lol) and I would...

Background: 120 gallon tank with 100 lbs of live rock that has been running since 2004 with wet dry filter w/ bio-balls. Originally a FOWLR system, soft corals were added in 2019. There has been discussion, over the years, that bio balls act as “nitrate factories” in our enclosed systems: they...