Can you have Calcium deficiencies in hard water?

[wutang]

My understanding was that if you're in a hard water area and use that water to feed your plants, minerals such as Calcium and Magnesium are present, therefore supplements such as Calmag are not required.

Would be interested to know whether anyone else in a hard water area has used calmag with their feeds.

Cheers

[Sage]

well certainly you must have a ph that makes calcium available and not locked out. You can have a ton of any element needed in your medium but if your ph locks it out it's like it's not really there to be used.

[wutang]

well certainly you must have a ph that makes calcium available and not locked out. You can have a ton of any element needed in your medium but if your ph locks it out it's like it's not really there to be used.

Yeah I get that dude. My Ph is always 6.2. Meters calibrated etc. Although this grow in soil has been a better attempt that my previous NFT setup, I've experienced a cal def in white widow and a nitrogren def in silver shining haze.

The more I read, it could be that at some point that plants have been stressed due to underwatering, and I was feeding nutes all the time, then I found that I didn't need to add nutes every water so I skipped it and that's when problems got worse. I think it was because the plant was used to nutes every water etc. Live and learn I suppose. Lets hope the buds are good

[GMO]

im under the impression calcium carbonate needs to be broken down into smaller parts for plants to use. usually we use a calcium nitrate cos plants have ready access to use it

4 parts calcium - 2 parts mag - 1 part K < non antagonistic range for cations ;)

[GMO]

im under the impression calcium carbonate needs to be broken down into smaller parts for plants to use. usually we use a calcium nitrate cos plants have ready access to use it

4 parts calcium - 2 parts mag - 1 part K < non antagonistic range for cations ;)

Correct, mate. Ca are too large to use straight away and as you say, needs to be broken down in soil.

[Keeno]

I used to use a product called omina by raw. Its softens the calcium or makes it more available when using hard water. Might come in handy in the future

[wutang]

I used to use a product called omina by raw. Its softens the calcium or makes it more available when using hard water. Might come in handy in the future

Cheers bud. I think my main problem is this darn british weather and growing in the shed. My pot level temps I think were getting to about 16c lights off. I've raised the heater on the controller from 20c to 23c +3 hysterics and that's now keeping pot level temps around 17/18 lights off, so in theory the roots should be a bit warmer and aid nutrient uptake. Maybe this is effecting calcium uptake as water out of my tap has 0.8EC IIRC last time I checked.