Quick EC question for adding Ca/Mg to RO.

lahadaextranjera

lahadaextranjera

Well-Known Member
Hi Guys,

Please help me out here.

Everyone talks about adding teaspoons of Epsom Salts or CalMag to gallons of water but what I need to know is how much do I add to my RO water which has an EC 0.0? Does this level go up for flowing or should i always buffer the same? I have Ca, Mg and I also have liquid N ( all Canna Mononutrients).

So far I have been starting with Ca EC 0.15-0.2 and Mg 0.15-0.2 = EC 0.3 - 0.4 Bit less for my Mums and they look def.

Thanks a lot for ur help !! :)
 
Kb's seeds

Kb's seeds

Active Member
o me me i use r/o filter water too lol well as u know i dont use much liquid nutrient anymore, but i can tell u a tip i picked up from the rev (skunk magazine's the rev) he uses general organics CaMg and adds a couple drops per gal of water, by drops i mean use something like a turkey baster, and squeeze it gently so u only get a couple drops out, literally drops like the size of a raindrop, i know he uses that during veg and bloom and it seems to work well for him, i dont think the rev is on RIU anymore but i chat with him on facebook all the time, if u have a FB account then look up therev revski (thas his fb profile name) and u can ask him any questions and he usually responds pretty quick, since i dont use Cal mag myself i cant really give ya anymore info than that, the rev also just released a book called True living organics : the ultimate guide to growing all-natural marijuana, just came out this year i havent even had a chance to read it yet, but i know from chattin with him that he does have almost a whole chapter in that book about liquid additives like cal mag, and he does use a r/o filter too
 
Sir.Ganga

Sir.Ganga

New Member
lahadaextranjera said:
how much do I add to my RO water which has an EC 0.0?
Click to expand...
You would add the recommended amounts for your reservoir size. Running an r/o is no different than tap water other than the starting point. Why you should be using it is because r/o strips all minerals and you have to replenish. I increase my cal/mag 2nd week of flower then drop it completely about the 6th.

Your ec should not dictate how much to use, its the plants that will tell you
 
BeaverHuntr

BeaverHuntr

Well-Known Member
Kb's seeds said:
o me me i use r/o filter water too lol well as u know i dont use much liquid nutrient anymore, but i can tell u a tip i picked up from the rev (skunk magazine's the rev) he uses general organics CaMg and adds a couple drops per gal of water, by drops i mean use something like a turkey baster, and squeeze it gently so u only get a couple drops out, literally drops like the size of a raindrop, i know he uses that during veg and bloom and it seems to work well for him, i dont think the rev is on RIU anymore but i chat with him on facebook all the time, if u have a FB account then look up therev revski (thas his fb profile name) and u can ask him any questions and he usually responds pretty quick, since i dont use Cal mag myself i cant really give ya anymore info than that, the rev also just released a book called True living organics : the ultimate guide to growing all-natural marijuana, just came out this year i havent even had a chance to read it yet, but i know from chattin with him that he does have almost a whole chapter in that book about liquid additives like cal mag, and he does use a r/o filter too
Click to expand...
I use Cal/Mag into every feeding and was always taught to add 5ml per gallon when using R/O water.
 
lahadaextranjera

lahadaextranjera

Well-Known Member
Well guys !!!

Since i've been on this thread I've been using either pure RO or RO mix with tap water to bring it to EC 0.2. this is a good level to buffer the water without making it too hard. There is plenty of Ca in the water and some Mg so if anything i may get a Mg def in the future. If this happens I can add few drops of liquid Mg. The soil will buffer the water now. In hydro I had to think the other way round.
 
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