New maintainer with algae on walls

[SurfaceDreamer]

Ok - partial refill completed this morning. Here are the results from my OTO kit (Taylor K2006 kit not here yet) and my local pool stores tests...

OTO test:
Chlorine: 6 (single dilution method)
Alkalinity: 130
pH: 7.8
CYA: < 30 (the tube only went to 30 and I could still see the dot albeit faintly - my best guess is 20-25 CYA)

LPS test:
Free Chlorine: 5
Total Avail Chlorine: 5
Alkalinity: 120
pH: 7.7
CYA: 25
Calcium Hardness: 210
Phosphates: 50

Looks like things are fairly balanced except a slighly low CYA. I'm not quite sure how these numbers are what they are considering the amount of water I drained but both tests (LPS and OTO kit) came up very close. I made sure to get the samples for the tests 6+ inches under the surface of the water. Anything else you can recommend I do prior to opening for a dip?

Also, being I have a lower CYA am I correct in assuming I will need to add bleach/chlorine more often? Thanks again for all your assistance!

[aylad]

Yes, you will probebly have to add chlorine more often, but if you'll test it daily it won't take long for you to determine how often that needs to be.