Thanks for the advice. I have looked into lowering ph, kh, and gh. Already have driftwood, but it has no effect since KH is so high. Peat moss looks like a possibility. However, can't find a definitive guide on how to use it to lower ph at a safe, slow rate. Also there is the issue of keeping it...
I have a 29 gallon well planted tank with 10 Harlequin Rasboras(2 males, 8 females) and Otocinclus. Every morning since I first put the fish in the tank, I see males and females exhibiting obvious spawning behavior on the underside of the leaves in my "ludwigia forest". However, I'm never able...