Sorry Tom, I always post thinking you guys know my tank! LOL!
I have a 20 Gal High tank. I use a Fluval 204, Soilmaster Select, Just about 3 WPG, I would say heavily planted, & well stocked. My NO3 goes up pretty high (well, for a fish only tank, around 15-20ppm) if I don't do the weekly water change, which is roughly 30%. I will be recieving a CO2 Reactor soon, so I will be doing a DIY CO2 system for a while till I can afford a Pressurised system. I want o find some Champain Yeast, as I've read it works the best. I believe I missed some the Rex had for sale a little while ago, that you can reuse the "sludge" on the bottom. That sounds like a good product, if it does work the way he says! Plus, I should probably get some CO2 Tubing from him also. So, I really should PM him, but, I'll wait till after Thanksgiving... I know how Hecktic things get around this time of year.
Seems the only plant I'm really having trouble growing is the Tonina, which I LOVE this plant! Everything else is growing well. I have to trim once every other week, sometimes seems to have to be done sooner too!