MedicalDave
- 42
- 18
based on your report your water isn't all that bad.Hey guys, thanks for all the tips. Been busy reading like crazy.
Clones are in the dome, want to set up a perpetual grow. Veg 4-6 weeks and flip.
Flushed the pots with ph adjusted tap water 5.9-6.5 until I ran out of water. The ph of the run off was 6.8-7.1 350-550ppm.
Will give them a mild feeding today when The lights come on.
Attached is my local water report, it’s a couple years old though. There’s always water breaks especially in winter so who knows have accurate the report is.
-“The desirable range for irrigation water is 0 to 100 ppm calcium carbonate. Levels between 30 and 60 ppm are considered optimum for most plants.”
Looking at my water report I have a CaCO3 hardness of 65. Which is just above the sweet spot. But it has been building up in my medium raising my ph to lock out the nutrients?
Do I have to get a reverse osmosis filter to deal with this?
Some background info:
I live way up north in Canada. Going to the grow store is a 2000km trip. 1 bag of ocean forest is 130-150$. miracle grow is what they carry here and it’s -40, no garden centre open for months. I’ve been out of the workforce for 2 years so funds are tight. A lot of products on American amazon aren’t available here, or are really marked up.
My water is 200ppm out of the tap, and has killed a thousand electric kettles. But I do ok with it, working with it as it is. Have to add a couple of mls of Calmag due to the hardness, but it's usable. I grow in DWC.
150 ppm is considered perfect gardening water for stable ph.
Why would you add cal mag to hard water? It would make it harder.
You would think it would increase the hardness, but it doesn't seem to. I can't grow with out it, my plants just don't pick mag up unless it's put in, and fry with out it. Been through all the options too, Calmg is the easiest way to go for me. I could go RO, but who needs the hassle and expense when you can use a drop of Calmag.
I see. Many times moderately hard water like ours is low on mag.
But it actually makes things worse in my grow.
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