Hi
I was in the same boat and I was confused about the t5s vs cpf. I was told the t5s are qite a bit better especially the ho one. Go over to lighting to read my stupidity t5s vs compact fluorescent is the thread.
http://www.aquaticplantcentral.com/forumapc/showthread.php?t=58275
I ended up ordering the 30 inch version but here is a link to the 24". http://www.aquaticexchange.com/product_info.php?products_id=1975
Don't know how good these people are since I just ordered 3 of the 30 inch lights from them(they were the cheapest). The only thing someone said was I should have got a different bulb(6.7k) instead of the 10k but other sites have said the 10k is okay but I will wait and and see. In that thread I was told the t5s will out preform the more powerfull 65 watt cpf in a deeper aquarium. I believe that since that what I told by the rep for a store. I never trust a store so I asked about this and the members here was nice enough to confirm this. I am going to be using them on some 29's. Hang in here. Replies often slowly drift in. There is other better qualified than me but I thought that this might help you.
I was in the same boat and I was confused about the t5s vs cpf. I was told the t5s are qite a bit better especially the ho one. Go over to lighting to read my stupidity t5s vs compact fluorescent is the thread.
http://www.aquaticplantcentral.com/forumapc/showthread.php?t=58275
I ended up ordering the 30 inch version but here is a link to the 24". http://www.aquaticexchange.com/product_info.php?products_id=1975
Don't know how good these people are since I just ordered 3 of the 30 inch lights from them(they were the cheapest). The only thing someone said was I should have got a different bulb(6.7k) instead of the 10k but other sites have said the 10k is okay but I will wait and and see. In that thread I was told the t5s will out preform the more powerfull 65 watt cpf in a deeper aquarium. I believe that since that what I told by the rep for a store. I never trust a store so I asked about this and the members here was nice enough to confirm this. I am going to be using them on some 29's. Hang in here. Replies often slowly drift in. There is other better qualified than me but I thought that this might help you.