The TLF reactors didn't seem to cut it for me, I have the big one and small one (forget what they're called). I ended up with dead spots no matter how much flow I pumped through them. I got the Vertex bio pellet reactor and used it for a long time with no problem.
I stopped using bio-pellets because it was too low of a nutrient system. My nitrates went crazy for awhile after stopping, ZEObak ended up saving me. I don't think I had enough different beneficial bacteria to break down my tank waste after the bio-pellets were removed. All balanced back after awhile but took a few weeks.
Aquattro, I'd recommend trying the same thing, try ZEObak or something of the sort. You're feeding your bacteria that help your tank cycle, but you may not have enough different kinds after running ULNS with zeovit. That's the sales pitch on it and it seemed to help me.
edit:I see others recommended microbacter7 - same kind of thing
Last edited by Lampshade; 07-28-2015 at 07:57 PM.
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