I had to quit fishkeeping for a while and everything in my 20g was un-cycled. So my 20g goldfish tank has been running for 24 hours and I plan to use TSS to cycle it. The thermometer says it was about 73 degrees with the heater WITHOUT the light. The tank was about 65 degrees without the heater and WITH the light. The tank is for one fantail goldfish and I was wondering which temperature would be better. It seems like it's too hot with a heater and too cold without it. :;fru:;fru What would you do? Also with my TSS would you recommend me putting it in before or after I put in my fish. Thanks!