Recent content by poolcool

I'm pretty sure that the pool was sufficiently shocked because CC is only about 0.2 and I'm losing 1 ppm or less of FC overnight. I don't know why I lost so much during the day yesterday with 45 ppm CYA, but I could tell that it had been raining when I got home from work, but it was probably...

I checked the tests again and everything is the same except that the TA did go from 130 to 125 when I wiped the dropper tip but how accurate is the test at that point? It starts to change at 11 drops, changes to a little more red at 12 drops and completely to red at 13 drops. So I interpolate...

OK, the pool has cleared up completely after two rounds of 16 ppm FC shocks, but the metal stains appear to be returning so I added 2 qts of HEDP in the hopes that it can catch them and even remove them while they are still fairly light. I brought the FC up to 16 at 10:30 pm last night and it...

Thanks everyone for the responses. They all sound logical based on the circumstances and I was kind of heading in that direction so it sort of confirms my suspicions. I have had a concern that the metal staining might return with heavy shocking but I’ve also been backing off on using metal...

A very brief history. Two weeks ago I raised CH from 150 to 300. I then did a citric acid stain removal with 10 lbs in 20K gals (an amount that I now think was overkill). I then raised borates to about 40. I have been having cloudy water since the acid treatment that sometimes seems to clear up...

Thanks for all of the responses. I realize that cloudiness is not an easy issue to resolve because of the very many possible causes. I’m therefore trying to troubleshoot by process of elimination and was wondering if there was a decent sequestrant test kit so I could rule out a sequestrant...

LaMotte Phosponate Test Kit, Direct Reading Titrator, 0–20 ppm/4 ppm HEDP/PBTC, 50 Tests There were some posts way back when that indicated some concerns about clouding due to a "small overdose of the most popular stain and scale control chemical ingredient, HEDP". You can read them here...

Thanks JasonLion. I saw your post about sequestrant levels up to 5X are OK so I added a maintenance dose of Metal Magic. The current readings are: FC 1.5 and rising pH 7.5 and steady TA 95-100 CH 300 CYA 30 Salt 3400 Borates 40 I've added almost 8 lbs of CYA since last week so I don't...

8 days ago I raised CH from 150 to 300 using calcium chloride (peladow) in my 20K gal SWG plaster pool. 7 days ago I performed an acid wash with 10 lbs of citric acid. The manganese stains were removed over night and the next day I added 2 qts of HTH Metal Control sequestrant which is 20%-30%...

OK, thanks guys. From what I can tell, the pH is around 6.2 so I'll start to slowly add some Borax because I'm adding boric acid anyway next weekend to fully utilize the BBB method. I'll check the pH to make sure I don't go above 7.2 as noted in the stain removal procedure. I added some HTH...

I started a citric acid cleaning yesterday afternoon and this morning the pool looks great. Now I want to start to rebalance but I don't know what to do first or what chemical to use. I've put 2 qts of HTH Metal Control so I think I'm OK to start the SWG or add bleach without the stains...

I'm getting ready to use citric acid to remove what is probably some manganese stains in my pool. In the past I have used an effective stain removal chemical from my pool store guy that he said was sodium erythorbate. However, I've never seen any reference to sodium erythorbate in any stain...

Thanks! I'll give it a try. A buck saved here and there is helpful after all the chemicals I've invested in this spring. But I'm betting that the BBB saves me some money in the long run.

Thanks for the help! I've got boric acid on the way so I'll follow the original plan. Prices at TFTestkits look pretty competitive so I stocked up on Taylor reagents and a salt test kit K-1776 (the number at Taylor's site is K-1766). About a second after I checked out I remembered the borate...

First off, thanks for the TFP. I've had my pool for about ten years and learn something new every year. With TFP, I've already learned 3 new things in 3 days. Now, for my question. I have low Ca hardness to the tune of about 150. I have metal stains (most likely manganese). And I want to try...