Problems with toxicities are far less likely when the grower alternates with plain water. If you were to start using pure water every other watering, it would seem like that would cut the strength of whatever you are alternating it with in half. However, on top of the halved nutrient concentration, every pure watering has at least some flushing effect. Between rinsing substances in the soil through the plant and whatever runoff occurs, it reduces concentrations rather than piling them on. Having no plain waterings will constantly increase buildups each time liquid is added, even if you cut the overall nutrient levels in half. Imo every soil grow should alternate with plain water. This doesn't have to be every other watering, necessarily, as long as the plant gets some pure water regularly.
im sorry but im a little confused...or maybe im not and just reading it wrong......so are u saying not to use the bottled water everytime i water even with nutes or just a plain watering i know this to be true .this is my normal watering schedule as is water- water- nutes- water -water- nutes...i know that if u use nutes all the time in every watering that yes u will most likely have a toxic build up of salts and other things.....please corrct me if im wrong here ....i dont spray my plants
the real question here is.. the water i bought can i start using it all the time weither its with nutes or with out nutes just like if i was using my tap water from the well....or should i not use it at all and use an alternative ...r/o machine is out of the question untill this harvest is over
