blueberrymilkshake
Well-Known Member
My calmag is a paper weight hah, I feel you man. I use maxi and I'm not sure if it's made for hardwater, but RO is finicky by comparison for me.
What's your tap water ppm?
- Thread starter twentyeight.threefive
- Start date
twentyeight.threefive
Well-Known Member
Jack's 3-2-1. Part B is calcium nitrate and epsom salts added in.
Bucsfan80
Well-Known Member
.08- .10
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LeastExpectedGrower
Well-Known Member
The Hardwater Micro is great after using the standard stuff. My numbers are really right where they should be for feeding. And I'm guessing less likely to have C/M based lockout.
xtsho
Well-Known Member
Is Portland’s water soft or hard?
Bull Run water—Portland’s main water supply—is very soft. It typically has a total hardness of 3–8 parts per million (ppm), or ¼ to ½ a grain of hardness per gallon. Portland’s groundwater supply is moderately hard: about 80 ppm, or about 5 grains per gallon.
What is the pH of Portland’s water?
The pH of Portland’s drinking water typically ranges between 7.5 and 8.5.
www.portland.gov
Bull Run water—Portland’s main water supply—is very soft. It typically has a total hardness of 3–8 parts per million (ppm), or ¼ to ½ a grain of hardness per gallon. Portland’s groundwater supply is moderately hard: about 80 ppm, or about 5 grains per gallon.
What is the pH of Portland’s water?
The pH of Portland’s drinking water typically ranges between 7.5 and 8.5.
- Portland’s water system was established in 1895.
- Portland’s drinking water system delivers water from two high-quality sources – the Bull Run Watershed and the Columbia South Shore Well Field – to almost one million people in Portland and surrounding communities.
- Most of Portland’s drinking water comes from the Bull Run Watershed, 26 miles east of downtown Portland.
2021 Drinking Water Quality Report
This annual report contains important information about Portland's drinking water and water system.
lusidghost
Well-Known Member
What I'd like to know is why do different brand have different ratios of calnit? Jack's is 15. NPK RAW is 9. Assuming they are both buying for a third party, is there a calcium concentrate that they add additional nitrogen to, or are they just the product of different processes of extraction?
blueberrymilkshake
Well-Known Member
I would be inclined to believe the meter, but I'm no bobby boucher.
xtsho
Well-Known Member
The 9-0-0 RAW is calcium nitrate and magnesium sulfate. If you look at the label it shows they're using a 15-0-0 calcium nitrate. Their RAW Nitrogen which is 20-0-0 is ammonium sulfate.
Yara's calcium nitrate is 15.5-0-0 and is likely what most companies use. Haifa has a 17-0-0 calcium nitrate as well. There's also PureCal at 13-0-0 which is what I think is the VitaGrow I've been using for years.
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LeastExpectedGrower
Well-Known Member
Yes, depending on how many miles of pipes the water is flowing through, how old those are and where they've taken their sample from, I'd tend to agree.
hotrodharley
Well-Known Member
I always ask if weeds and grass are happy under an outside faucet.Cali water - 255 ppm / 7.1 ph
Meh
Plants outside do not give a shit .
LeastExpectedGrower
Well-Known Member
In all honesty...it depends. I don't water our grass (Trying to keep as much water in our well as possible), but some of our plants like our hydrangeas much prefer me to use an acidifier and have done way better once I did.
hotrodharley
Well-Known Member
There's often special care needed for non-native flora.
xtsho
Well-Known Member
Blueberries like acidic soil as well. I water from the tap but I've added sulfur to the soil and amend yearly.
lusidghost
Well-Known Member
I'm have trouble following. How do they get the nitrogen down to 9 if the starting point is 15? Is it just filler? How is that not diluting the calcium ratio?The 9-0-0 RAW is calcium nitrate and magnesium sulfate. If you look at the label it shows they're using a 15-0-0 calcium nitrate. They're RAW Nitrogen which is 20-0-0 is ammonium sulfate.
Yara's calcium nitrate is 15.5-0-0 and is likely what most companies use. Haifa has a 17-0-0 calcium nitrate as well. There's also PureCal at 13-0-0 which is what I think is the VitaGrow I've been using for years.
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LeastExpectedGrower
Well-Known Member
Blueberries, holly, rhododendrons (along with others) all like acidic soil of different levels. Roses are right in the middle, but I do add bonemeal for the phosphorus.
Many many plants will do just fine as long as your water/soil are not extremes, but if you want plants to flower or grow their best it's often a good practice to get it into its 'comfy zone' with all factors (light, temp, humidity, soil, water) to get the most you can from them. And at 10$ up for a decent seed most cannabis growers are doing more than just trying to get their plants to survive and be 'ok' they're asking them to produce to what I'd consider an 'unnatural level'. So getting the details right certainly doesn't hurt.
xtsho
Well-Known Member
The nitrogen ratio is reduced due to the addition of magnesium sulfate. The 9-0-0 NPK product is just a dry form of calmag. It's not 100% calcium nitrate. You can start with 15-0-0 calcium nitrate but after you've modified the ratio by adding something else you're no longer at a 15-0-0 percentage by weight. You could mix calcium nitrate with bread flower and the NPK would be lower than the 15-0-0 you started out with.
NPK calculations are based off of the weight of each nutrient so as you reduce the weight of a specific nutrient in a blend it's NPK number is going to go down.
lusidghost
Well-Known Member
Oooooh. Yeah, that makes sense. I wasn’t accounting for the mag. Thanks, I’ve been wondering about that for a few months now.
xtsho
Well-Known Member
speedwell68
Well-Known Member
67 ppm. Is that good or bad?