1. How often do you change the
nutrients?
2. What is the temp of the nutrients?
3. How do the roots look (white and healthy or dark brown/black)?
4. what pH do you keep the nutrients at?
5. What type of
hydroponic system are you running?
N.F.T.,
drip,
flood and drain,
water culture,
wick or
aeroponic.
6. Is the growing chamber and the
nutrient reservoir light proof?
If you have any pictures they may help. It sounds like you have excess algae growth, but the big question is why.