Another Question. I know I know I ask a lot of them lol

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IndooorGardnerOhio

Well-Known Member
Ok I could not afford Cal Mag, BUT I do have Epsom Salt And I have calcium sulfate AKA Gypsum and calcium carbonate AKA Garden Lime. If I was aiming to make a Cheap and Dirty Version of Cal Mag as a Buffering Solution for Coco Coir, How many Grams of these should I use per gallon of water? Which Calcium Source would be Better Gyspum or Garden Lime?
 
Star Dog

Star Dog

Well-Known Member
Im unsure about gypsum?
If you buy calcium chloride you can treat as required with either or, it'll cost you around £5/10 for 1kg which is enough for 10,s of 1000,s of liters.

Mix up a solution of 2.0ec then use 1ml of that solution per litre of nutrient for 50 ppm.
 
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IndooorGardnerOhio

Well-Known Member
Hugo Phurst said:
Can't answer your question but....
Are you using RO water? - You don't need cal-mag if you're not.
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I need Cal mag to Buffer the excess Sodium and Potassium out of CocoCoir not as a general feeding for the plants themselves. I will likely be using either Aged Tap water(to remove clorine) Or Distilled Tap water(I have a water distiller). Not sure if i want to spend HOURS distilling water tho lol so likely ill let it set over night or for a day or two to remove the chlorine.
 
greenmobster440

greenmobster440

Well-Known Member
Not a dumb question at all. Making your own mixtures is a challenge most experienced growers don't even try..lol. A quart will get ya going. Gallon of most brands $25-50. I find myself using quite a bit even in early stages. But have backed off a little and use it daily for foliar mix..worm Castings, silica, and CalMag. I hope ya find what you seek
 
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IndooorGardnerOhio

Well-Known Member
greenmobster440 said:
Not a dumb question at all. Making your own mixtures is a challenge most experienced growers don't even try..lol. A quart will get ya going. Gallon of most brands $25-50. I find myself using quite a bit even in early stages. But have backed off a little and use it daily for foliar mix..worm Castings, silica, and CalMag. I hope ya find what you seek
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Im a Science geek lol I found a recipe for DIY cal mag


DIY Cal Mag

1.5g / gal - Gypsum powder
1g / gal - Epsom salt
 
1

1212ham

Well-Known Member
IndooorGardnerOhio said:
I need Cal mag to Buffer the excess Sodium and Potassium out of CocoCoir not as a general feeding for the plants themselves. I will likely be using either Aged Tap water(to remove clorine) Or Distilled Tap water(I have a water distiller). Not sure if i want to spend HOURS distilling water tho lol so likely ill let it set over night or for a day or two to remove the chlorine.
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Most coco comes pre washed and buffered these days. The chlorine doesn't hurt coco, many coco and hydro growers use pool shock or h2o2 in the reservoir and run a sterile grow, no root rot.
 
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