I’m a new member to the site.
Having moved to Andalucía in Spain 18 months ago I become the main pool “boy” with responsibility for maintenance and cleaning.
I have a bit of a problem with algae in the pool now as several things have changed recently; the government have set national charging times recently and my husband has said no filtration in expensive hours (most of the day in the week) so I was having to run it at night and/or the weekends. I’ve also had visitors using the pool for the last three weeks and, just to increase the challenge, the selector unit has started to leak to waste when I do use it causing the water levels to drop dramatically despite having the hose running. I use a Dolphin pool cleaner every night (in the cheap rate) to help. I’m now waiting for a pool mechanic to come out on Friday and fix or replace the unit. Once my visitors have gone home I’m going to shock the pool to death (once my filtration function is fixed). Good job I enjoy a challenge.
Having moved to Andalucía in Spain 18 months ago I become the main pool “boy” with responsibility for maintenance and cleaning.
I have a bit of a problem with algae in the pool now as several things have changed recently; the government have set national charging times recently and my husband has said no filtration in expensive hours (most of the day in the week) so I was having to run it at night and/or the weekends. I’ve also had visitors using the pool for the last three weeks and, just to increase the challenge, the selector unit has started to leak to waste when I do use it causing the water levels to drop dramatically despite having the hose running. I use a Dolphin pool cleaner every night (in the cheap rate) to help. I’m now waiting for a pool mechanic to come out on Friday and fix or replace the unit. Once my visitors have gone home I’m going to shock the pool to death (once my filtration function is fixed). Good job I enjoy a challenge.
Sounds like you have a couple things going on - a bad multi[rt spider gasket (leaking) and algae. For algae we use the 
