Nutrients Question (switching from GH to Masterblend)

I've been using GH Flora Series as well. But after finishing these bottles I think Imma switch to Masterblend 4-18-38, because of costs.
So I digged into this site, and found most of them say 'just use it as 2:2:1 ratio(MB:calcium nitrate:epsom salt) for entire growth including flowering.. just diluting it when plants are young.'
What I worry is Won't it be N toxicity?
I'm just a follower of feeding schedule, don't know much about science. but I thought cannabis need different ratio of nutrients for Veg and Flower.
and one more question is Imma also use Hydroguard because I grow in DWC. So, Is it enough without any more nutrients? Only Masterblend 3parts and hydroguard are all I need?
Thank you

Can't speak for either but I use canna and its the same formula for both veg and flower and I've never had N tox

Just cut back on the CaNo3 during flowering if your worried about it or if they are too green.

Why not get the hydroponic formula instead? Is the tomato blend recommended over it for some reason, or were you thinking of using it because of the lower nitrogen content?

Jacks has way more flexibility than the other brands now, btw. With the recent addition (another bag to buy, lol) of a new zero nitrogen formula to their 3-2-1 product line..

Basically, making it more like a true 3 part nutrient lineup, now with separate grow and bloom mixtures. Allowing you to mix up different part A stock concentrate solutions to use during the different growth stages, instead of trying to alter the regular part A & B ratios to achieve the results you are looking for.

Might be worth looking into!

Drop That Sound said:

Jacks has way more flexibility than the other brands now, btw. With the recent addition (another bag to buy, lol) of a new zero nitrogen formula to their 3-2-1 product line..

Might be worth looking into!

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It's just hard to get hydroponic formula and Jacks 321
I'm in prohibited country so what I can get without customs shit is only MB 3parts..
If I can get GH without any customs declaration, I'd use it for more..

Roguedawg said:

Just cut back on the CaNo3 during flowering if your worried about it or if they are too green.

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What if I get calcium deficiency..? I'm a worrier sorry :'(

coreywebster said:

Can't speak for either but I use canna and its the same formula for both veg and flower and I've never had N tox

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That's a relief for me ! Imma try

When I had MB i ran it a 2-2-2 per gallon.
You won't have issues cutting Calnit with this formula as it is all ready very high calcium.
If anything it is on the low side for N durring veg, but you don't need those super dark green leaves to grow healthy plants.
If you watch this forum, many growers are victim of the ole N-Claw.

i use recommended mix for masterblend.and in flower i raise the mg a little bit when bottom leafs start dying off

phd4485 said:

What if I get calcium deficiency..? I'm a worrier sorry :'(

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Don't worry, talk to, listen to and look your plants, they will appreciate you.
But yes, if you'd need to you could add some CaSO4 late flowering to give some Ca+S to cut N levels lower.
K:Ca 3:1 ratio is fine, but there's plenty variation on tap waters.