So i'm switiching to t5, but i'm thinking the 30" coralife... It has two 18W bulbs in it - now i know that the wpg thing doesn't apply cleanly to the t5's, so is this the correct lumens for my planted tank? I'm running pressurized co2 and looking to get some hairgrass going and some rotala indica if possible... Thanks!
20 gallon , not 20 litres right? because 20 litres is a 5 gallon ! ............ the corallifes are junk if you ask me , the one youre looking weve already whent through like 4 at the LFS if n e water gets on them there gone. we had problems with shortage , and i got electricuted by the last one , now were running a single glo HO , i just bought the double HO glo , im in love with it. i payed 210 with both bulbs (lifeglo and powerglo).
i wouldn't mind spending the cash, but that light looks like it would boil my fish in a 20 gallong long.... 4x24w on a 20L? methinks it's a bit much...
The 4x24w Tek T5 comes with 2 ballasts and 2 on/off switches. You could have these on separate timers. You could have two lights that work most of the time and you could have the other two come on for a mid-day burst of light where all four bulbs are on. Something like this will probably work:
4 hours - 2 bulbs on
2 hours - 4 bulbs on.
4 hours - 2 bulbs on.