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Seeing a reaction now. A couple of the leaves have tips curling upward.

Which puts me in a predicament as the treatment for that is to remove infected leaves to stop the spread, which I can't do as they are important fan leaves. Hopefully the peroxide and the silica (when it arrives) does the trick. Not thrilled about it likely being septoria but I'm relieved to...

No burn yet but I had just applied it when you messaged me. After responding to your message I ran up to the grow room and used napkins to soak up the peroxide. I had only sprayed the infected leaves. Hopefully I did fry the plants, but the way things are going I wouldn't doubt it, lol

I just sprayed with 3% right as your reply came thru. I will mix a new bottle of h202 @ 1% and add in a drop of dish soap (dawn) and hit them again later today. About to start the pool shock in a bit here, just waiting 24hrs since my last dose of peroxide as peroxide neutralizes chlorine. I...

I added a pic from today to see if it helps anyone identify what I'm dealing with here?

Waiting on the silica to be delivered, which may not be till saturday. The leaves are looking much worse today. Wondering if I should use peroxide as a foliar spray until it arrives? Peroxide is an antifungal.

Thanks again!

I don't see why this would be the wrong one as it's calcium hyperchlorite and non ph buffered, but want to run it by you quick to make sure. Use at a rate of .50g per 10g to reach 5ppm?

Thank you for explaining what the silica and fungicides do! It's interesting to know that the silica raises the ph of the leaves to create an uninhabitable environment. Knowing the actual purpose of applying it is very beneficial. I understand it strengthens stems and increases growth and yield...

Are these a good choice for silica, or is there a different product you would suggest? I'm leaning towards the second on as it's purely silica.

Thanks, man! Silica it is. And the fan leaves are staying.

I will have to mix up a gallon of calmagic and test it, because I got 79ppm last time I added 1ml per gallon. Yes, you have mentioned sticking with EC before. I appreciate the reminder. That was my intention, but I've been having conversations with another member and the discussions surround...

The treatment for septoria is removal of infected leaves to stop it from spreading up the plant, remove any decaying matter, improving airflow. Supposedly that should eliminate it, but if it doesn't, then fungicide or neem oil is advised. Will silica provide the same benefits as neem or fungicide?

As for the calimagic, I think I'm still at 25%. A full dose of calimagic is over 400ppm. I followed the 120ppm that we discussed, which was advised by dropthatsound. But 25% was where I originally started when I first began using calimagic. I will jump on Amazon and order some silica. Neem oil...

I completely understand your point about the chlorine being used up faster if there is rot. I believe the same goes for dying organics, algae. Flushing the pots absolutely makes sense! Just wanted to assure the process I was asking about was correct. Thank you for the time you devoted to...

Sounds good! Thanks man!

Point taken! I suppose I add the shock to the system, let it circulate for a bit, then take from the rez to pour over the hydroton?

I was under the impression that chlorine should be introduced slowly to avoid shocking plants? Based on your advice I presume that's not true?

I wondered about that as the taproots of each plant shot thru the hydroton and grew long af while the other roots seemed to take forever to start appearing and hit the water. I suppose there is nothing I can do to get the roots thriving? And that will greatly affect the grow/yield?

Temps float between 65-70f, and reached 73 one day. That was the same day I did the rez change and noticed the white roots turning brown. I recently bumped the grow room temp up to 77-79 and now I can't get the water temp to stay any lower than the 65-70f.