Dear Dizzle,
Did that. Exact specs. You do it while the plants are in the system right? I was afraid I misunderstood... BUT (the following message was jacked from another thread):
One-Two Punch Directions for a Nasty Reservoir
1 – Add Physan20 to your existing tank at a rate of one teaspoon per 15 gallons of reservoir. This comes out to 1ml of Physan20 for every THREE gallons in your tank. So divide your tank gallon capacity by 3, then add that many ml of Physan20. Run this tank for 3 days. Groovy set up a wholesale account with the manufacturer of Physan20 after we had a nice chat with the owner of that company. They are only 5 miles away from our office. We didn’t pull any punches, we asked what the application rate for MMJ Hydroponic reservoirs would be. The owner let us know that although Physan20 is a poison, in the dilution he recommended it would NOT be toxic to the plants.
Furthermore, he let us know that Physan20 biodegrades into NITROGEN in 3 to 7 days depending on the tank conditions. Therefore he stated that plants will not concentrate and store the toxic elements of Physan20 and will pose no threat upon consumption of the MMJ Crop. For this reason we recommend running the initial dose 3 days, then draining the reservoir to eliminate any traces of Physan to ease your mind, and also to clear out any dead organic matter such as dead algae, fungus, bacteria, and dead root matter.
2 – Mix up a fresh reservoir of your regular nutrient schedule. Lastly, add in 2ml of Hydro-Fungicide per Gallon of your new reservoir. Add the same ratio to any top-off water you add, and replenish the full amount once a week if you haven’t changed your reservoir out yet.
The reason the Physan20 is great to use first ONLY IF your tank is nasty is that the Hydro-Fungicide manufacturers suggested use for a problem tank is an application rate of 20ml per GALLON the first day, decreasing each day by 2ml per gallon until you reach 8ml per gallon and continue that out until 10 days has gone by. This is a very large amount and we dont want to see anyone spend that much to clear up a problem when Physan20 can wack it much more efficiently. In the manufacturers defense, they do state that 'it may be best to clean the tank first'.
Fuck it. Ive seen heavier losses. Worse come to worst, I just hack up all my plants and stick them back in to my robocloner. Im still about 6 weeks out from firing up my first MPB, so maybe this is just Gods way of saying my timing was off.
Next time, I will only use the physan between harvests, to clean the system. Thats what has always worked for me in past. I was just trying to kill a little algae on the ebb and flow tables without removing plants. I did add some
clearex at the same time and did it on a flush, so the plants were chowing down on physan and sugar water for a couple days. Probably not the best diet for a youngin'...
I just wanted to share my results. Figure we learn at least as much from failing as we do from success.
