Do I need to lower my PH or increase my FC?

Poseidon

Well-known member
May 24, 2007
148
Houston, Texas, USA
VondaP said:
Readings this morning are:

FC - 4
CC - 0
PH - 7.8
CYA - 60
Borates 50 ppm

Thank you,

Vonda
Your pH is at the high end, so I would recommend lowering it. As far as FC, we would need to know the cyanuric acid level, as that determines the proper FC level.

EDIT: Opps my bad, you did post the cya. You do need to up the FC. See the chlorine/cya chart in the stickie section.
 

Poseidon

Well-known member
May 24, 2007
148
Houston, Texas, USA
VondaP said:
Most folks would say my water looks great, but I know it can sparkle more.

Vonda
Maybe you need to filter a little longer each day. The borates should prevent algae. Still, I would target FC just a bit higher to have a little wiggle room. You should not let the FC drop to less than 2.0 ppm, otherwise you will be flirting with bacteria. This is all assuming the pool is a non-SWG pool.
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
I would try to keep FC at 5 or above at all times. Bringing the PH down a little will also help the chlorine be as effective as it should be. So right now you are just a little low on FC and it is being less effective because of the high PH, so you are right on the edge. When my pool is at an equivalent point the water looks a little "dull".