Precipitation -- here we go again...

I just bought some GH Maxgro because the price was right and I liked the concept of a complete 1-part dry nutrient.

Imagine my disappointment when I found a huge round hunk of white stuff right after opening the bag.
I assumed it would dissolve eventually and put it in the bucket.
Nope, after an hour it looked the same so I threw it out.

Today I found another smaller nug and decided to try dissolving it with hot water from our 'Insta-hot' faucet that we use for tea.




Hours later, it had broken up a bit but didn't dissolve.


So I stirred the shit out of it and pounded it with a wooden spoon. Broke it up into smaller bits, but they never dissoved.

Not sure what this is... calcium sulfate? (gypsum)

It ain't gonna dissolve.
WTF???

Does Megacrop do this shit?
Maybe the microbes can break it down but you'd think GH Maxigro would be fucking soluble.

Chunky Stool said:

Maybe the microbes can break it down but you'd think GH Maxigro would be fucking soluble

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That's pretty wierd Chunky. I've been using the Maxi duo for a really long time and never saw anything like that. It gets a little bit clumpy from humidity but it breaks apart and disolves easily. Whatever it is...I wouldn't put it on a plant...some sort of contaminant...
JD

I’ve never had megacrop do that.

Maybe where you bought it from didn’t store it right?

My maxibloom won't fully dissolve either. I put it in a jar with hot water and shook the shit out of it for a few minutes and there was a TON of sediment on the bottom. Megacrop dissolved perfectly for me.

dstroy said:

I’ve never had megacrop do that.

Maybe where you bought it from didn’t store it right?

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Good to hear megacrop is better.
It may just be a matter of freshness. The GH maxigro was on sale after all.

I'll use it on my outdoor plants when they start looking pale and need a quick fix.

Calcium attracts moisture, which is probably the root of the problem.
I'd rather just add cal-mag when I mix than worry about dry nutes that aren't soluble anymore.

I bet if you stored a bag of megacrop in your garage for a year, it would turn into a solid block.

Chunky Stool said:

Good to hear megacrop is better.
It may just be a matter of freshness. The GH maxigro was on sale after all.

I'll use it on my outdoor plants when they start looking pale and need a quick fix.

Calcium attracts moisture, which is probably the root of the problem.
I'd rather just add cal-mag when I mix than worry about dry nutes that aren't soluble anymore.

I bet if you stored a bag of megacrop in your garage for a year, it would turn into a solid block.

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It totally would. I keep mine in a bucket.

Years ago the VitaGrow I use had some issues with the micronutrient part clumping up. They had some complaints about it. Turned out that it was stored in a damp environment. They now double bag it and then put it in a ziplock. Problem solved. Moisture is not good for dry nutrients.

A lot of nutes will mix up nice and then a few days later there is a layer of salt at the bottom of the res. GH Flora will do that but doesn't seem to cause a problem. I don't know how big a problem it is for the Maxi to not mix completely. With megacrop the water turns brown so you don't know what isn't mixing lol.

Chunky Stool said:

I just bought some GH Maxgro because the price was right and I liked the concept of a complete 1-part dry nutrient.

Imagine my disappointment when I found a huge round hunk of white stuff right after opening the bag.
I assumed it would dissolve eventually and put it in the bucket.
Nope, after an hour it looked the same so I threw it out.

Today I found another smaller nug and decided to try dissolving it with hot water from our 'Insta-hot' faucet that we use for tea.
View attachment 4330131



Hours later, it had broken up a bit but didn't dissolve.
View attachment 4330132

So I stirred the shit out of it and pounded it with a wooden spoon. Broke it up into smaller bits, but they never dissoved.

Not sure what this is... calcium sulfate? (gypsum)
View attachment 4330134
It ain't gonna dissolve.
WTF???

Does Megacrop do this shit?
Maybe the microbes can break it down but you'd think GH Maxigro would be fucking soluble.

Click to expand...

I've been switching between maxi and mega. I like both but the maxi seems to drift up in ph more than the mega. Just in 1 gal jugs and I'll pH them to around 6.2. in 24 hours the mega will be around 6.3 and the maxi will be hitting 6.8. Ro water. Both seem to work I just hit the maxi with some down and use.

dandyrandy said:

I've been switching between maxi and mega. I like both but the maxi seems to drift up in ph more than the mega. Just in 1 gal jugs and I'll pH them to around 6.2. in 24 hours the mega will be around 6.3 and the maxi will be hitting 6.8. Ro water. Both seem to work I just hit the maxi with some down and use.

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Does it effect the nutrition uptake if its NOT fully dissolved? Like creating lockout in the medium or create deficiencies? I have maxibloom and grow and even in hot water and hella shaking it still has hard white bits in the jug.

KhanTheOG said:

Does it effect the nutrition uptake if its NOT fully dissolved? Like creating lockout in the medium or create deficiencies? I have maxibloom and grow and even in hot water and hella shaking it still has hard white bits in the jug.

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I emailed GH about that, here is their answer.

"Good morning *****, what you are seeing leftover are hollow crystals that used to hold fertilizer salt bonds. There is no fertilizer value left in this material, so it is not of concern unless it is bothering you. I think you will find this disappears if you use hot tap water to dissolve the material, especially in a bigger container. There is a saturation point with powders that is quickly reached if trying to mix enough powder in a 1 gallon blender for say a 50 gallon reservoir. If you used a bigger vessel for mixing, you would not see as much material in the mixing container."

dubekoms said:

I emailed GH about that, here is their answer.

"Good morning *****, what you are seeing leftover are hollow crystals that used to hold fertilizer salt bonds. There is no fertilizer value left in this material, so it is not of concern unless it is bothering you. I think you will find this disappears if you use hot tap water to dissolve the material, especially in a bigger container. There is a saturation point with powders that is quickly reached if trying to mix enough powder in a 1 gallon blender for say a 50 gallon reservoir. If you used a bigger vessel for mixing, you would not see as much material in the mixing container."

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Soooooooo its basically the casing that holds the calcium and keeps it from bonding to the P and sulfur while in the mix all together? Mkay