Backyard Aquaponics
A place to discuss aquaponics

edit... just seen your "growbed" and and system size, I see how that might pick up heat, that it can't lose....I think you need some shade and maybe some sprinklers/misters on timer there to create more evaporative cooling for that area

Yes, it is a small system in the alley way and I have come to realise that I am not prepared for the summer heat. Although I lived at my current place for years, I have never grown much produce in my backyard until this year... Well maybe I should say that this year I have attempted to grow since I don't really have much produce that survive the heat... I am already making plans for some shelter (either living or artificial) for next summer... so hopefully I will get better yield next year during summer...

But the system by the alley way is also affected by a reverse cycled air-conditioning compressor... during summer it is actually putting more heat in the alley way... so if I want to run this system during summer, I would need to find a fish capable for taking high temperature...

How about Silver Perch?? Anyone know what max. temperatures can SP take??

You can push them up around 32 degrees... even beyond for short periods... as long as you have appropriate aeration...

Remember water at 30 degrees only holds about 50% of the oxygen that it does at 20 degrees...

And during winter, what is the lowest temperature they can take??

About 2 degrees.. supposedly... depends on size.... and duration of temperature exposure...