Normal output T5 bulbs

[mike31154]

Well if the powerheads need to be upgraded, may as well gut the lights too! NO T5 tubes are going to severely limit livestock choices, even if you are successful in sourcing tubes with a suitable colour spectrum. I assume this is going to be a FOWLR then?

Was almost going to suggest replacing the NO ballasts with some HO jobs, but that would mean more heat & has the potential to void any CSA approval of the fixture that's built in. I guess that would apply for switching to LED as well, the design would need to be carefully thought out so you don't end up being liable for burning the client's house down. Different story if you were building for yourself, although electrical safety standards still apply. Probably wouldn't want to burn your own house down either!