2 Quick Questions

[slim20012]

What is EI and iv read on here about people breaking their lighting time up into two halfs how does this help and what are peopls times on for 5 hours off 2 on for five ??

 

[Liam]

EI is estimative index there is a pinned topic above the current threads which will explain it.
The break in lighting is believed by some to combat algae, I have never read anything that seems to prove that it does though, except that Co2 levels would rise in the dark time.

 

[Themuleous]

The 5-2-5 lighting thing is a myth.

Sam