Hi all,
I have a 2,300 gallon pond and my fish are doing well until I start doing water changes. Some of the fish flash for a coupe of hours following a 10-15% water change. After a couple of hours they go back to normal.
I always put a little more than the required amount of SAFE dechlorinator as I fill the pond with city water.
I do 10-15% water changes every time I clean my filters since I have a DIY 55-gallon system that pretty much takes 200-300 gallons to clean. I’m cleaning the filters 2-3 times a week because I’m feeding heavy.
My system has two circuits
1- BD>ST>Static Bio Balls filter>MBBR>pump>Waterfall with more bioballs>pond
2- Skimmer>pump>S&G drum>pond
UV light is inside the Settlement tank on circuit 1.
Water:
pH: 8.4 steady
Ammonia- 0.25
Nitrites- 0
Nitrates- 80ppm (can’t bring it down even with all the water changes so I cut back on the feeding)
kH- 7 drops
Thanks