Phosphate Reduction

[Myka]

Yikes! Could you cover the overflow with a black acrylic lid? I get them made at a plastics shop here, costs about $10.

Maintenance, stocking, and feeding techniques can keep NO3 and PO4 at close to zero levels, but not everyone wants to follow that method. Biopellets are a good option - they work just fine in a TLF reactor. Most of the issues with biopellets are when people use too many. A lot of tanks that need biopellets also need GFO. I prefer biopellets over liquid carbon dosing (vodka/vinegar/NOPOX/etc) because there is less chance of bacteria film IME.

Originally Posted by hunggi74

The ULR Hanna phosphorus checker turns off after 10 seconds of displaying the results as well.

The ULR ones I've used stay on for at least a minute or two. I've not come across an ULR that turned off at 10 secs, just the LR. That's weird that they would be different. How old is yours?