I have been battling green or mustard algae for the last 6 weeks. First the water is crystal clear, see the bottom perfect..But the green algae is growing on the walls and sides in patches and is hard to brush off..When I clean the cartridge filter it's full of a mustard looking dirt which makes me wonder.
Now all test are good, TC is around 6 ( I have shocked it at least 4 times to the level that it should have killed algae for the whole block ..Only test that is out of range is CY which is around 90, not sure how it got so high, just drained and refilled 4 months ago..One mistake I did was used test strips for the CYA before I bought the test kit and it kept saying CYA was zero.
Would the CYA of 90 impact algae?
Now all test are good, TC is around 6 ( I have shocked it at least 4 times to the level that it should have killed algae for the whole block ..Only test that is out of range is CY which is around 90, not sure how it got so high, just drained and refilled 4 months ago..One mistake I did was used test strips for the CYA before I bought the test kit and it kept saying CYA was zero.
Would the CYA of 90 impact algae?