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Is it ok to do this?

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Basssman7
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I have a 4x2 tent so not to many plants at once. I have been using the GH 3 bottle series and add CalMag as well. Recently I have started using Great White for seedlings and transplanting, molasses during flower, and a foliar spray of Epsom around the start of flowering. I also have some Humbolt's Secret Golden Tree.

Generally, I alternate between feed/water.Β  During feed they get the bottled nutes as recommended but at 1/2 strength plus the Humbolt's Golden tree. When I water it is with the molasses (during flower) and CalMag added to it.

I have 2-gallon sprayers I use to mix and apply the nutes in. I use a 5-gallon water jug to mix my water and apply it with a battery pump. (since I always give more water) All my mixes are pH balanced.

What I am concerned about is leaving the mixed feed or water for several days sometimes before it is used up. (at which point I rinse it out and fill to start over) In the sprayers it would be airtight, is that a good thing? Will I get strange interactions that will turn into poison for my plants? Will the molasses sitting in the water for a few days start to sour or even ferment? (it is unsweetened, unsulfered, organic)

What are the dos and don'ts about mixing and storing nutes? Am I doing things ok or am I just waiting to have something go sour and kill a grow?

 
Posted : January 20, 2021 11:42 pm
BubbleHok, Hart, Chillbert and 21 people reacted
Macky
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Posted by: @basssman7

What I am concerned about is leaving the mixed feed or water for several days sometimes before it is used up

You need an air stone if you're going to let nutrients sit for any longer than 24 hours mate, if the bacteria doesn't get oxygen, it goes bad and start smelling funky lol.Β 

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Posted : January 20, 2021 11:48 pm
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Basssman7
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@macky damn it. I don't think my cat will let me use airstones.

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Posted : January 21, 2021 12:30 am
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monkeydo
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You can use hydrogen peroxide instead, the food grade stuff from the hydro store, not the stuff from the drugstore. Provides plenty of oxygen and the plants love it.

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Posted : January 21, 2021 12:38 am
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Basssman7
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@monkeydo That is interesting. Is it expensive? How much do you use?

 
Posted : January 21, 2021 1:32 am
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monkeydo
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The dosage can vary but based on 12% hydrogen peroxide which is probably the strongest I can get,Β you can use 5ml/gal. Β Add it last, it does should not affect EC or pH. Some growers go as much as 3 times higher dosage without any negative issues so it’s not extremely sensitive to rate. Cost varies but big β€œA” sells it for about 30usd/gallonΒ 

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Posted : January 21, 2021 2:50 am
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@monkeydo That would keep some oxygen in there for a few days?

 
Posted : January 21, 2021 3:09 am
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monkeydo
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I’m not a chemist so I can’t accurately answer the time answer but this practice is sometimes referred to as running a sterile res. The peroxide kills the bad bacteria with oxygen so I’m not sure if this is usable with organic nutrients with living microbes.Β 

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Posted : January 21, 2021 4:11 am
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