Ok, most people who read my 'nagging' threads will know that I use Flourish Comprehensive and Excel, along with tetra crytpo root tabs,all my plants are growing and most are more green than they have ever been, along with my Red Tiger Lotus, which is a lovely shade of red. I have 1.2wpg over a 12UK gallon fish tank. However, I have noticed pin holes and yellowing on some of my anubia leaves and wendtii, and my java fern, as always has turned a lovely shade of brown. :'( I was wondering, what other fertilizer should I add? Would potassium work, or should I just add trace elements, since the leaves are turning yellow? Also, I have noticed my roots on my Cryptocoryne Tropica, keeping turning translucent and rotting away.