There is one pool store in my area that promotes Borates in your pool. They even have a program where they guaranty no algae if you follow their program. If you get algae, they will personally maintain your pool at their expense to get the problem resolved. Pretty good endorsement for Borates I'd say.
Here's the catch. They say the normal 35-55 ppm borates are not enough in this area (Houston, TX). I'm guessing long days of hot sun are the reasoning. For them to give the guaranty, you have to maintain between 70 and 90 ppm.
1) I have resisted using Borates because I have a dog and cat that do drink some pool water. I've convinced myself from my research that the 30-50 ppm is OK...but I'm certainly not convinced that at 70-90 it will still be OK.
2) I'm adding borates more for the look and feel, and less for the algaecide quality (because I've found algae isn't a problem if you keep the FC/CYA/pump times in check). With that said, is more borates better to prevent algae...or are they just selling more product by requiring you to be at higher levels?
Thanks in advance for any feedback.