A temp of 89 degrees F in the bloom room is really pushing it. If you are only touching 89 quickly and then dropping into more managable temps, you may be ok.

Also, unless you live in the southern hemisphere (or somewhere very chilly), summer is just starting for you. Your grow room temps will not go down by themselves, and may actually rise unless you are running air conditioning. If your are, crank it up.

If you are only at day 26 of bloom now, you have at least another 4 weeks until harvest, depending on strain. Unless you get the temps down some, you may not be happy with your yield.

Since I live in the steamy south, I have to finish up with the HIDs in April before the heat sets in.

IMO,
ipe: cb