I just wanted to say that based on the raw numbers, it's true, but I just got my pool replastered, and it actually saved me money because I got to buy less acid until my CYA hit 60 and then I quit using the pucks.This makes these sources of chlorine quite a bit more expensive then Cal-Hypo and bleach and chlorinating liquid.
I also cringe when I hear that people are adding stablizer to their pools. Why not get the benefit of chlorine along with the stablizer and save the work of hauling bleach jugs and the expense. I'd like to see the math between stablizer + bleach and dichlor/trichlor. My fill water is ph 8.0, so is the acid from trichlor/dichlor not possibly offset?
I'm just really super cost conscious and I want to do things the cheapest way possible. I have my doubts about SLAMing as well. I think there should be some discussions before people start racing out and buying bleach and reagents. My fill after the replaster was an incremental $45 on my water bill for 18K and some of that was household useage so when the bleach expense starts to exceed that cost, I'd like to know what other factors might make draining and refilling a bad idea.
Besides my possibly misguided belief on ever buying stablizer, I also can't figure out why anyone would ever want to buy the equivalent of hardness+. My thought is get the cal-hypo. For me personally, I would never buy either because my fill water is 11 grains of hardness, and I think that works out to really close to 200 ppm. PoolMath says I should be at 250 to 350, but does it really kill me to wait for the CH to rise from evaporation? Since 3/4 when I filled the pool, my CH has risen from 200 to 250 in 2-1/2 months.