I never said either was bad. And; right on,cyclonite...you can't have to much oxy...

epsom salts are for magnesium and old schoolers still use it religiously. You need to check your nutes to see if you actually need to add epsom salts...But as the Hydro Industry progresses, comes potentially better alternatives. I like calmag+, because of all the beneficial elements in the mix. anyway: I never said epsom salts were bad or would cause problems.

Now h2o2, which in laymans terms is used to keep your root system disease free! The fact is; That if you were using any organic nutes, or additives; h2o2 would kill all beneficial organisms in your rez that those nutes were providing; Good ones and Bad ones.

So, If you choose to use "Organic" Hydro nutes, then you might want to replace h202 with an enzyme, that is compatible with organic mixes.

Here are 2 completely different enzyme products...I attest to both.
Sensi-Zyme by Advanced Nutrients is good. A product that is Organic and I find to be a great additive to your rez for root health is hygrozyme, but it costs about 35-40 bucks a liter.

cyclonite...chill, We all appreciate anyone to answer. In some cases members have read some of the many posts or threads I have done, and they feel comfortable to get confirmation, so to speak, from me. I'm not always 100% right; But, I try. It's all good, Keep up the good work. Welcome to Cdot...peace