Indoor First Grow - JeanO's Genetics // Root Beer Float
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Megacrop 1 part with a little epsom salt. I put 75ppm cal-mag into distilled water and 3g/gal MC and 1g/gal epsom and then dilute down.
Been running 400-450ppm and keeping the pH right around 6.0
I think there is some imbalance in the MC 1 part unless you mix higher strengths. I had read a whole long thread on it somewhere here but I lost my bookmarks with the forum move thing.
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Be careful with the cal/mag and epsom salt. That is two sources of magnesium. If you get too much magnesium over time you will lock out potassium and Calcium. That can cause some yellowing and brown spots. @Mañ'O'Green is the expert on identifying deficiencies.
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Yes, the problem with mixing small amounts of any dry fertilizers is that it most likely is not an in balance scoop. The smaller the amount the higher the chance for out of balance. Think of it like ping pong balls, base balls and basket balls in a bin with a balance of 4:2:1 and you scoop them out with a tractor bucket, you might get lucky and get 10 basket balls 20 base balls and 40 ping pong balls now scoop out a 5 gallon bucket only 1 basket ball will fit but maybe 10 ping pong and 4 baseballs for a ratio of 10:4:1 That is very different than the target.
This is essentially what is happening when you try to mix a small amount of dry fertilizer. The larger the amount you can mix at one time the better the mix will be.
Thanks man! Yeah, some really knowledgeable growers on here. I try and absorb as much as I can. Definitely spent some time reading before even attempting a grow, and I kind of copied someone else. Figured it was a good guide. Ctrl-c, ctrl-v = plant!
I pushed the feed strength up from 400 ppm to 630 yesterday. Ran 1.5L through last night and just gave 1L today. Plenty of runoff which I tested and it was around 360 ppm. Definitely some rust spots on the newer but not newest leaves. Hopefully the new batch is what it wants.
Current confusion and thoughts:
If the runoff ppm is below what I'm feeding, does that mean the plant is using what I'm giving it? And should I increase the strength until I see the runoff testing close to feed strength?
Give it a couple of days to adjust to the new feed. But your runoff ppm should be around feed level or slightly (200-300ppm) higher until late flower. Idea is that you give them all they can handle and flush out the rest without going overboard
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That's a little bit to raise in one feeding typically I don't like to change the ppm by more then 100ppm at one time maybe that's me? I believe it has to with the osmotic root pressure or something fancy like that
Typically I follow this if I'm checking
Runoff lower = increase strength
Runoff higher = decrease or add volume
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