It doesn't really help people to help you if you post temps in a mixed format go with either F or C. Even 76f seems a bit hot.

Can you post pics of your set-up & plants?

What size are they as 1Kw could easily be to hot for beanlings and cook them at 19". Due to cooking of one of my NL beanlings I had to start with a 250W light almost 5' away and sowly bring the lamp down as the green growth on the beanlings appeared.

You could probably find more info in the FAQ section & maybe if you can give more info somene with more hydro experience will chip in with some advice.