No, no, no, no, no!
Your nutrient solution should feel cold - at around 18oC - 21oC.
This is warm enough for good growth, but cold enough to keep oxygen levels high.
If your nutrient solution gets too warm, oxygen levels drop. You don't want that - oxygen keeps roots healthy and kills some really nasty root diseases!
To make matters worse, algae loves a warm feed. If algae starts growing, your oxygen content drops further.