I have been running my pump around 7hrs daily with a single 200gm Trichlor tablet in the dispenser. From my FC readings (assume I don’t it correctly ?), it seems like the tablet dissolve rate is not fast enough.
I have drop another tablet in the dispenser just now, so I have two tablets working together now.
Is it a good idea to crush a tablet and put into the dispenser to quicken the tablet dissolving rate?
The followings are the two readings I have done so far (only have a 4 in 1 test kit, still waiting for my LaMotte test kit to arrive):
22/1/20
FC 0.2
pH 8.0
TA 50
24/1/20 (attached pic)
FC <0.2
PH 7.4
TA 50
Yep, this is just what I was concerned about. An SWG (and I suspect a tab feeder is the same) cannot effectively bring up your FC level. They're designed to maintain the level once you get it where you want it. Your FC is dangerously low (in terms of an algae outbreak). Bring it up immediately with liquid chlorine. Check Pool School for the proper FC level for your pool type. Use Pool Math to determine how much liquid chlorine to add, based on your water volume, like right now.
Oh, and don't crush a tablet, I don't believe any good will come of that. Use liquid chlorine.
Once that's done, you might use the method I did to tune my SWG (should also apply to tab feeders). Say your target FC is 5 (for this example). Bring your FC to 5
with liquid chlorine. Fill your tab feeder as per the instructions. When I used to have one, it was filled with all the tabs it could hold, not just one at a time. Not sure how yours works. Anyway, fill the feeder and set the dial midway. Come back in exactly 24 hours and test your FC.
- If it's low, bring your FC back to 5
using liquid chlorine, and then turn up the feeder dial a notch. Come back in exactly 24 hours and do all that again. Repeat that process, day after day, until your FC holds at 5 without adding liquid chlorine. Wherever the dial ends up, that's the adjustment your pool needs (at least, for this time of year, it may change throughout the year, or if your bather load changes).
- If after the first day, your FC is high, then dial down the feeder a notch, come back in 24 hours. Repeat until your FC starts to lose ground, then bring it back to 5 with liquid chlorine, and dial up the knob a notch.
When it's time to start up the SWG, you'll use the same process to find the SWG setting your pool needs.
If you try to move your FC with tabs alone, you'll be at it forever... Remember, the feeder (and SWG) are designed to
maintain FC, not change it from one level to another.