Ah yes, TMX... isn't it wonderful. If you like the Delta, change to it. If you like the TMX, try a more diluted photoflo or better yet, go to using LFN (Low Foaming Agent) made by Ethol I think. It is in a very small dropper type bottle that you just squeeze out 1-2 drops. I also use it in my pre wet to break the surface tension of the water. A little bottle will last a long time.(posted 8236 days ago)