I dont have a heater and the room temp is around 21-22C. Would the rise in temp harm the plants? I tried blood worms but i havent seen them go for it. I did drop some flakes but not seen them foraging at the bottom. Maybe temp is on the low side.
I would say a 250 watt heater would work fine in a 45 gallon.
10 Gallon Tank:
~Countless Pond Snails~1 Espe's Rasbora~1 Harlequin Rasbora~ 5 and 5.5 Gallon Tanks:
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Many of my scaly friends from my original tank from 2011 have passed, except for two! I am in the process of re-doing my tank. :)