I have a roughly 18k gal pool with jacuzzi. Long story short about 6 months ago I drained and refilled the pool along with a new filter, because I could not keep the pool balanced for the life of me. Pool was good until about 2 months ago and the battle started again. This started all from my mango trees which clogged up my vac line and skimmer lines pretty bad. Just about a month ago I was finally able to clear all the lines and now the vac is stuck again. I noticed when the vac stops working the pool gets thin layer of green which settles when the pool is off. Thinking that i could no longer keep chlorine I switched to a salt system about 2 weeks ago. First couple of days the pool was awesome looking now 2 weeks later the pool needs to be brushed every few days due to the light green film which is hard to see by eye but when you brush you see it.
I'm at my wits end with this pool and would appreciate any guidance. Seems like no matter what i do to get it crystal blue it is only temporary and won't stay like that for more then a couple days. Meanwhile I have a friend with much smaller pool and similar equipment and he doesn't have to touch his pool for weeks and even month at a time.
the water is clear however I develop a small amount of green on the bottom of pool when system is off, which is hard to see but if you brush you see it. Could my equipment no be enough to keep clean? Any suggestions help.
hayward northstar 1hp pump
water ways 200 sq filter
Hayward salt and swim 25k gal model (new)
2 main drains
1 skimmer line
1 vac line
3 return jets in pool
4 return jets in jacuzzi
alk is between 80-120