Planted Tank VIP
Join Date: Jul 2002
Location: Winston-Salem, NC
Keeping low NO3 levels can definitely help curb algae, but it also stunts plant growth and triggers red pigmentation in plants. I alternate between high and low NO3 levels, depending on if I am wanting growth or coloration. For example, I recently did some significant re-arranging and trimmed down a great deal of my plants so I raised NO3 levels to boost growth. The red pigmentation in my Rotala indica and Sunset Hygro is almost completely gone.
5ppm is a good level to maintain, though. I believe your plants are consuming your Potassium levels faster than you are supplying it with the Tropica master grow. Try adding a teaspoon of Potassium Chloride and wait a week to see what happens.
- Sam P -
plantedtanker in limbo - all tanks currently in storage