Question about SLAM process

Jun 4, 2015
44
ROWLETT, Texas (Dallas)
Pool Size
30000
Surface
Plaster
Chlorine
Liquid Chlorine
I’m on day 5 of my slam process. I had neglected my pool last fall and as a result had a lot of algae and sludge up until last week . I opted to drain, vacuum, power wash and refill pool. Also cleaned out the filter and power washed the skimmer. Started my slam with pH of 7.2, CYA 30, TA 85, CH is low at 160. My SLAM FC is 14 per Pool Math. First 3 days I checked and keep my FC at a minimum of 14 every 3 or 4 hours ( tested enough to where I had to buy more CL titration solution for my K2006 kit). I run my robot twice a day and spray it out. For the past 2 days my OCLT is 1.5. I poured over 18 gallons of 10% bleach into this pool and am down to my last 4 gallons before I have to buy more. (30k pool in north Texas heat with no shade). Since I refilled by pool, everything visible seems clear. Am I missing a step? I saw some threads where people are backwashing but ived read the SLAM process 2 times and there is not mention of that for a DE filter. Only that adding DE to a sand filter would help speed things up, but I have a FNS 60plus. I plan to convert to SWCG (RJ60+) but would like to get my chlorine stabilized so I can set my TA and CH and then convert. Tired of pouring money into this pool for the slam. TIA for any SLAM clarification.
 
My SLAM FC is 14 per Pool Math
With CYA of 30, your slam level is 12 FC.
Am I missing a step?
Nope.
but ived read the SLAM process 2 times and there is not mention of that for a DE filter
Any filter, backwash/clean filter an note clean pressure with filter on high pressure. When pressure rises 25%, clean/backwash filter again. With algae, you may be cleaning/backwashing filter often...
 
With CYA of 30, your slam level is 12 FC.

Nope.

Any filter, backwash/clean filter a note clean pressure with filter on high pressure. When pressure rises 25%, clean/backwash filter again. With algae, you may be cleaning/backwashing filter often...
Thanks for the reply. Sorry I mistyped. My CYA is 35. For my filter, if starting PSI is 10, then does that mean I backwash at 12.5 psi? If so how much do I backwash? Until most of my DE is gone and I have to replenish DE?