I've read the other posts on this but questions remain, perhaps because my situation is a bit unique. I have a spring-fed well that produces water that's virtually distilled, and therefore has very little mineral content. It's also high in ph, like almost 9.
Following my Bloom City Cal Mag's directions of about 1 tsp/gallon does bring the tds up, but only to about 350. Ph remains around 7.3 after this is added, so I've been supplementing with citric acid powder to reach 6.5-6.8. For feeding I use Jack's 10-30-20 twice a week.
My question: would I do better to use more cal mag to get the tds higher, which as an added benefit lowers ph as well? With each indoor grow, and I'm on number 5 now over the past two years, the plants look great with the above approach until the mid flowering stage, when I always start seeing brown/rust coloring in the leaves which would be indicative of deficiencies in calcium, manganese and so on.
Thanks
Spider Farmer sf-2000 led 200 watt
Fox Farms Ocean forest soil
Temp range 67 dark, 84 light
20 on, 4 off
Spring water ph 8.7 corrected to 6.5
TDS raw is about 100
Following my Bloom City Cal Mag's directions of about 1 tsp/gallon does bring the tds up, but only to about 350. Ph remains around 7.3 after this is added, so I've been supplementing with citric acid powder to reach 6.5-6.8. For feeding I use Jack's 10-30-20 twice a week.
My question: would I do better to use more cal mag to get the tds higher, which as an added benefit lowers ph as well? With each indoor grow, and I'm on number 5 now over the past two years, the plants look great with the above approach until the mid flowering stage, when I always start seeing brown/rust coloring in the leaves which would be indicative of deficiencies in calcium, manganese and so on.
Thanks
Spider Farmer sf-2000 led 200 watt
Fox Farms Ocean forest soil
Temp range 67 dark, 84 light
20 on, 4 off
Spring water ph 8.7 corrected to 6.5
TDS raw is about 100