Yes the 29G is for breeding. Yesterday I moved my spawners to my 90g till I get this fluctuating fixed.. confirmed with out touching it 81degree morning and 86 at night.. too much. My 90G with just one 300 watt is always 83.2..3 morning and 83.4 now... perfect. And yes it off a crappy digtal cheapo ... lol 🤣...
I will receive my inkbird controller tomorrow. I will keep my 200 watt in the 29 gal. And hopefully it keeps it to a .5 varieants.
Although my gut feeling is the heater maybe busted since it fluctuating 5 degrees a day.