Seaweeds may drastically lower PH to dangerous levels?

[Ray]

Originally Posted by K-Sci

ES, how do you dose KelpMax in S/H monthly? My intuition, which is certainly not 100% reliable, is that if Kelpmax is in the S/H water, it would be like watering with Kelpmax at every watering. That is, unless you replace the water after a day or so.

-Keith

Certainly, in S/H, the plant would be exposed to the product longer than if applied to a potful of bark, but if you only apply it once a month, it isn’t anything like using it at every watering. The ingredients are absorbed relatively quickly, those that aren’t decompose, and the next time you water, you’ll be flushing the pot anyway (assuming you’re watering a semi-hydro pot correctly).

[K-Sci]

Originally Posted by Ray

Certainly, in S/H, the plant would be exposed to the product longer than if applied to a potful of bark, but if you only apply it once a month, it isn’t anything like using it at every watering. The ingredients are absorbed relatively quickly, those that aren’t decompose, and the next time you water, you’ll be flushing the pot anyway (assuming you’re watering a semi-hydro pot correctly).

Thanks Ray!
I have two seedlings in S/H as an experiment. I water them the same as the non-S/H except that the pots are sitting in trays of water.

-Keith