Water softeners are for removing "hardness" like calcium and such from water, not iron, it does help due to the way it works but not real well. I have very soft water coming from the ground, but with lots of iron. I have an air injection iron remover which helps in my house with keeping toilets and such clean of rust but even so I still had the problem with the hot tub..Thanks! Is this any different than using my whole house water softener?
Very close A.O.! It would have been a perfect solution if we still had the pool.
Joyfulnoise - would I be ruining my whole house softener if I’m taking water after it? The iron from my well water (and all water from well) goes into the Iron Curtain filter, then in to the water softener. I could take it after that to an outside faucet and run into my tub for filling right? Wouldn’t that be the same as the portable one? Or am I missing something?
Did he say he had hard water? I don't remember seeing that.. they don't necessarily go together, I have naturally soft water and lots of iron in my well. There was a water softener here when I got here but there was no need, no reason to waste salt non stop.I wouldn’t bother with only using iron filtered water. Let the water softener remove the mineral hardness as well. My suggestion is you use fully processed water from whatever tap is available and then run the water through an RV filter for a “final polish”. Let your household filter system do list of the work and then try to get the last little bit of iron out before water goes into the tub.
However, the first step is to measure iron levels at all points - before the iron curtain, after the iron curtain and then after the mineral softener to make sure your system is operating correctly. Then you can go on from there to other solutions.
Almost all iron filters operate under the principle of precipitation as there are no inexpensive ion exchange methods. Greensand is a type of manganese containing mineral that acts as a catalyst to help promote the oxidation of iron from its soluble +2 ion form to the largely insoluble +3 ion (rust is iron oxide with the iron in a +3 oxidation state). Introduction of an oxidant (chlorine or potassium permanganate) helps to regenerate the greensand. Sometimes air is introduced through a Venturi inlet to help promote the oxidation of iron water into its insoluble form. Once the iron precipitates, it can be removed by sand filtration (the final portion of the greensand filter is basically a sand filter). The efficiency of the iron removal is highly dependent on many factors (initial iron concentration, water flow rate, condition of the manganese sand, dissolved oxygen content, etc) and and it is very easy to overwhelm an iron filter if conditions are not properly calibrated.
I suspect what is going on in the OP’s tub is simply the result of a small amount of iron making it past the household filter system. It’s not enough iron to cause issues in the house (water taste, stained toilet bowls, etc) but it’s enough for chlorine to react with and cause the yellow/brown tea colored water.
Normally just at a fill, but also if you need to add water, and you will need to add water for evaporation, splash out etc. But you wont need as much.i just added just under a 1/2 cup of iron out. If that works do I need to do that often or just on a fill?
As for iron still in the fill water, maybe, but I put an iron test strip (made just for iron test)in the tub yesterday once it was half filled. It showed no iron at all....
Should be fine till you add water again.Well that was quick. The iron out cleared it all up and it’s crystal clear now. But next time I add chlorine will it turn again? Or does that iron out truly take it out? I thought I read here that there’s no way to take iron out with a chemical