What to do with a 25lb bag of Jack's 7-15-30

G

grow-pro

Active Member
Have a 25lb bag of Jack's 7-15-30 as well as a 25 lb bag of ammonium calcium nitrate and some Epsom salt. I will never use that bag of 7-15-30 and bought it years ago by mistake. Any suggestions on how to supplement it and use it as a veg and flower fertilizer for soiless grows?
 
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weedstoner420 said:
You mean 7-15-30, not 17, right?

That looks pretty similar to their 5-12-26 part A nutes, but with less Mg. Maybe you could add a bit more Epsom salt to make up for it...?
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Bad typo on my part will edit now. Thanks for the catch! yea I was thinking that. was wondering if it would throw something else off but thats probably what Ill end up doing.
 
grow-pro said:
Bad typo on my part will edit now. Thanks for the catch! yea I was thinking that. was wondering if it would throw something else off but thats probably what Ill end up doing.
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Too much sulfur is not a huge deal in soil, it can lower the pH though. Not sure about soilless tho...
 
You can run it 3-2-1 and it will have a good profile for the major elements. Jack's Finish is missing the elevated micros to be used as a base salt, but you can get a small 500g can of those for a few bucks.
 
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