Recent content by AlanH

Thanks for the tips and link. That $240 replacement will cost about $800 ($1100 CAN) by the time it gets to Nicaragua. Although it looks "well aged" the bearings are fine and all moving components/mechanisms move freely. Although the electrical contacts look good and check out for continuity the...

I have a Pentair Dynamo 2 speed (110 volt) motor (pump) that is not working. It hums at both speed settings but does not spin. I've read a number of the posts about this, tried various suggestions, and still cannot get it to work. The "humming" problem came about after a refurbishment of the...

Thanks ajw22, for the clarification that free chlorine is active + reserve. For 10+ years I have been managing with a Taylor K-1000 and have a pretty good seat-of-the-pants sense of the pool's health. To import a complete TFP-Taylor kit I need (according to the Ministry of the Environment and...

Where I live (Nicaragua) the "best" test kit available is the Pentair PRO-11. I have not been able to contact Pentair about using the kit since they ask to leave a phone number to return the call which will not happen since I am using Skype. A couple of emails also remain unanswered. I am...

Interested in following this. My CYA plummeted from 35 to less than 20 (10ish?) over 2 weeks since the last test. No rain. Usual splash out and evaporation replacement. I just finished a mustard algae slam and all appeared to be back to normal. It was ahead of schedule for the CYA test (and some...

Looks like I'm going to have to replace my Dynamo 1HP, 2 speed pump. Everything electrical is good but the motor housing, end plates and base plate are badly corroded to the point of splitting apart. The pump was run on low speed (about 3 amps) 95% of the time and had a minimal impact on our...

Just a follow-up. I was able to dilute the water samples and use the DPD tablets using the 0.5 markings on the lower end of the comparator. I used the OTO drops first (with dilution) to get a ball park of the dilutuion required since the tablets are somewhat expensive and hard to find. After the...

Thanks all. @red-beard - great if it is green algae (well, better). I think it would be best to treat as mustard though. The photo is not typical of what I saw in the pool. That streak is a peculiarity of my circulation that creates an eddy in that area and anything that is in the pool always...

@ajw22 - the algae has definite yellow color. On the rare occasion I have had to deal with a green algae but this is very visibly different. Are you saying that for mustard algae do a "normal" SLAM first, which for me would be FC=14 (CYA=35), followed by a higher concentration SLAM (FC=22) for...

Thanks. That seems to be working for levels of FC=22ish for mustard algae (as recommended by Pool Math) and dilutions of 4-5 to 1. Getting down to CC of 0.5 or lower and OCLT of a loss of 1.0 ppm or less may be a challenge. The best (finest scale) comparator I have is one left over from a...

Moved from here. Just keeping an eye on this forum as I deal with my algae bloom. Wouldn't FC depend on type of algae? Don't know for the OP but in my case Pool Math recommends FC=22 for the mustard algae I have, versus FC=14 for a "regular" shock. (13000 gal, CYA=35ish).