Backyard Aquaponics
A place to discuss aquaponics

That looks nice!

Looks like the reservoir for the swirl filter is decent sized too. That should be good at compensating for the smaller amount of gravel.

That system is very simple, neat, and functional. I like it. Perfect for a little herb garden just outside the kitchen door.

Unfortunately 3 of our koi has died in the last few weeks.
One big one and two medium size koi.
The pH is pretty low, it was below 6.0.
It is now slowly coming up and sitting at 6.6 at the moment.
The pump was not running 24/7 which I have changed now.

Another koi died yesterday. Only 2 left.
The pH is now 7.4.

Hi !
I have both Koi in my large tank and they have been coexisting with no issues for about 8 months. I use Koi from my small pond to cycle my tanks (I'm one of the few who does not practice fishless cycling these days).