Green water issues
Hello All,
Sorry for the long post. My 10 years old koi pond is about 2k gallons. The water is always green even though the algae on the liner are very short and look healthy. I want to have clear or less cloudy water and healthy water.
My current set up:
The water go through skimmer and 3 inches bottom drain to the pump then through Ultima II and back to the pond (from the 2 inches pipe). The water suppose to go out the fountain but the liner of the fountain is leaking and will fix it later.
I know Ultima II can’t work alone to make water really clean/clear, so I am thinking of adding another … thing to work with my Ultima II.
My Budget is $500 or less. I am open to any options (like mini sieve, Birdman’s sand & gravel filter, etc). I used to have 57V UV-light but the result wasn’t good (may be flow rate wasn’t right I don’t know and the power supply already broke so UV light is out for this project.
My available resources are 55 gallon blue barrel (the empty blue barrel in the picture) and 300 gallons/hour submersible pump. So I am thinking of DIY adding a Birman’s sand & gravel filter with blower (stand-alone).
Can you give me some idea what I can do/add to make the water clear? I hope I have provided everything I know. Please ask me for any other questions. Thank you very much.
Water test: PH : 8.6, Ammonia: 0, Nitrite : 0, Nitrate: 0
Fish stock : 10 koi from 4 to 10 inches. I feed them once a day and they grow very slow. I think they are all males…lol
I backwash once a week, about 3-4 minutes
2k gals liner pond, Ultima II 10k, PerformancePro Artesian 1/4hp 2.7 Amp 4902gph, Savio skimmer (8.5 inch faceplate), 3 inches bottom drain.
3k gals liner pond, Ultima II 10k, PerformancePro Artesian 1/4hp 2.7 Amp 4902gph, Savio skimmer (8.5 inch faceplate), 3 inches bottom drain.