There are 2 kinds of T5 tubes.One is like the oldfashioned,just stronger(and thinner),kind of HO.Then there is "Compact T5 tubes"
These are double and on 55 watt each.One unit usually consists of 2 or 4 compact double T5´s.THESE are the ones to buy.Today they can be bought for the price of an oldfashioned tube some time ago.
Usually they are in a mixed spectrum too.One doubletube is cool white,and the other cold white.
But the other T5´s are absolutely also good to use.It has become more easy and cheap to light da ladies.!:rasta:
The picture is one of my Cinderella 99.Have been in flower 3 weeks today.