Plant issues.

[OLDBRO]

This year the plants in my upper bog are not doing well. Previous 8 years I would get flourishing floating plant in the upper water fall/bog.
The changes to the system this year are I lost the shade tree, and I added bio balls to the bog when the plants started to fail. Fish doing
great, fingerling are now big after all the years. I bring them inside in winter but pond sans bog runs all winter with a school of ancient
Minnows in it. The cover you see is lowered overnight to keep raccoons out. The white plastic I put in to cut out some of the direct sun light since crabapple was killed in the arctic freeze we had last winter.

300 gal buried watering trough, 70 gal bog with bio balls.
800 gph external filter.
UV system.
Because of size I have always done intermittent partial water changes for years.
Well water run through whole house filtration system since last year, plants did well up to now.

Thanks all.

 

[mrsclem]

What is the total gallons of your setup? 370 gallons is too small for koi. You are running a filter as well as a bog? That could be the reason your plants are not doing well.

 

[addy1]

Bog plants like direct dirty water from the pond. I have no filter except my large bog. It takes care of 8 plus ponds.