Can't we all just get along?
I have found through all my research from various forums, grow shops and the only trusted form of knowledge, my own personal experience, that in this hobby, what works wonders for one, might be a horrible no-go for another. This is especially apparent when dealing with things like bacteria like we are where there are so many different types and sub types and certain strains that have resistance to certain things etc.
I've learned that first hand dealing with the slime...first it was the "pool shock" guys saying NOTHING worked before they tried pool shock then everything went away. Tried pool shock, even the horribly overpriced version (UC Roots), did nothing but make the slime angry. Then tried the "nuclear solution" (Physan 20). I read countless threads of people saying how it was the ONLY thing that worked after EVERYTHING ELSE failed. Tried it, and again, just made the slime mad and also the plants. Heard about how UV sterilizing your feed water would help along with a sterilizing agent like the above mentioned ones, and that's the ONLY THING that worked when EVERYTHING ELSE failed, "just get one and you'll be golden!"...tried that, made the slime less, but still there and still suffocating my plants.
Anyone see a pattern above? Almost every thread has it's fanboys for the method being talked about and all you read is "its the ONLY thing that worked when EVERYTHING else failed"....funny when you read the threads back to back since one is usually saying all the others failed, then click to next forum/method and that one is saying the one before failed and IT is the ONLY one that will work....and so on until you have exhausted all the methods! I hated getting all excited reading about how this is or that was the GOLDEN TICKET to combat the slime, but failure after failure I started learning to not get my hopes up so fast just based on internet green thumbs opinions and isolated experiences without empirical evidence.
I finally found a solution that had zero mentions of failure, the Erythromycin antibacteria treatment using fish health products. I tried it on some almost dead plants in a 100 gallon RDWC and yes, it killed all the slime within 4 days and tons of new roots are growing out. So, I killed the plants. Threw them out. Yes it killed my slime, but I'm producing a medical product here, I'm not going to give my patients medicine with unknown amounts of an ABX in it! I searched for days about whether Erythromycin is systemic and whether it was absorbed by the plants and stored in the foliage but couldn't find any hard evidence. So the mycin does work 100% but what's the point if you can't use it with the plants? I tried running it in an empty system that had bad slime, did the whole 5 day treatment, cleaned it out really good, rinsed well, and tried a new batch with just water, low nutes and chlorine, and the slime was back within a day, so the ABX treatment apparently only works when you use it constantly, with the plants in the system, from clone to harvest. Not something I would do.
So after all that frustration and months of head scratching I found this thread. I did my normal scoping out, comparing the number of "it didn't work" posts to the number of "it worked great" posts and it seems to be a pretty good ratio. A lot of the "it didn't work" posts also seemed to come from an error in either the ingredients, brewing, or use of the tea also. The posts about the tea being brewed perfectly and causing the slime to get worse to scare me though.
I'm going to give the tea a try tonight, been brewing a batch for 48 hours and I have a few noob questions.
I saw this mentioned before but nobody elaborated. It was said that the amounts needed are NOT linear as you go up in batch size. Meaning, since the simplified recipe says you need 1/8th cup of AF, 1tsp of Mycogrow, and 0.5 Tbls molasses for each gallon, you do NOT want to use whatever gallons your making x those numbers. I understand the concept since your causing whatever you add to multiply, but what are the amounts then, for bigger batches?
I currently have 3 120 gallon systems that are slimed, so using the 1 cup per gallon rate, I need 7.5 gallons per system for the initial dose...a lot more than the 2 gallons HB makes in the tutorial. Also, the measurements being thrown around seem to be shot from the hip at best "about a handful" of AF....."about a half scoop of this" etc. The method I used was in that newer "EWC TEA Simplified" thread that is supposed to be a condensed version of this. It called for only an 1/8th cup of AF per gallon, much less than original 1/2-1 cup that HB said he uses, and much less molasses too, compared to the original 1/2 TABLEspoon per gallon.
I just went with the simplified directions for the trial run, 8 gallons of UV sterilized RO water, 1 cup of AF total, 8 Tsp Mycogrow Soluble, and 4 Tbsp molasses. Dumped into a 18 gallon tote with 2 12" air stones and a 80w pump with a heater set to 72F. (water was low 50s to start, waited till it got to 70 to add ingredients.
All seems fine, good foam, good smell, but my question is, do I really need that much Mycogrow per gallon with bigger batches? Gets pretty darn expensive. I know I'll only be making the big batches a few times since I'll stop using the "fix a problem" rates and go down to the 1 cup per 10 gallons amount, but I'm still going to be making batches of 20 gallons at a time for awhile....maybe use half the amounts? 3/4? Shooting in the dark here
Also not sure if this was asked, probably was, but what is stopping us from just mixing up a new batch of water/molasses, and just inculating it with a few cups of 2-3 day old tea to start the new batch?
Also, I read in the more recent posts that bigger systems require less tea, is that even for the "fix a problem" rates? I have the 120 gallon systems and also a 250 gallon large system, all RDWC, so if I could be using less that would be nice!