this bit
Results of this work also showed a number of other effects. A large "bloom" occurred which clouded the test tank, an occurrence that could and often does kill tank inhabitants
Well is says that you can not enclose them so i might have to be a bit more careful. And i dont know if i will put glass on the bottom. How high off the tank will be safe if i dont put glass in.
I am making a light for my tank and need a bit of your guys knowledge.
The lights that i am putting in say that they are not suitable for electronic switches/remote controls.
Does that mean that i can not put it on a timer??
Your input would be much appreciated.