Troubleshooting High temperature swings

[Tom nhia]

Hi
I've been having some temperature swings that seems to relate to the light schedule. Tank system is 2 10 gallons and a trigger sump crustal 30 for about 30 gallons total with gen4 and gen5 xr15. I though it was because of the t5ho on my 10 frag tank so i changed those out for a gen 4 xr15 but the swings are still there.

Here's the apex graph

I have the apex turn off the Inkbird at 80F. Inkbird is set to 78F. The heaters themselves i believe were set to 77F or 78F.

Temperature gradually ramps up hitting peak right as the lights turns off at 10 pm and drops back down during the night until 6 am. Only weird thing is that my lights arent on until 10 am so im not sure why it start ramping back up at 6

 

[Kfactor]

i would say its the lights heating it up

 

[Tom nhia]

i would say its the lights heating it up

Any solution that doesnt require turning down the lights or a fan? Lights are running at around 70%-80% for sps. If i can avoid the fan to make less clutter then thats great. If not I'll have to plan that into the new stand im building for the system

 

[Kfactor]

maybe a fan blowing in the sump area when the lights are on

 

[Tom nhia]

maybe a fan blowing in the sump area when the lights are on

Ill try that. Any recommendations for. Cheap fans? I have one but it requires me to manually turn it on and off

 

[EeyoreIsMySpiritAnimal]

What does the house thermostat program look like? If you keep your home cooler at night than during the day, this can also amplify the temp swing.

 

[Tom nhia]

What does the house thermostat program look like? If you keep your home cooler at night than during the day, this can also amplify the temp swing.

Usually around 75 most of the day. Im in SoCal so we dont heat the house during the day. Only early in the morning or late at night for an hour during the "colder" months