Add back

Hey I'm going to start a thread. Plz forgive my laziness to search but seems useless for some things.

I have a one plant DWC 5 gal res. Ph has been stable pretty much about 5.5-5.9 (drops test)
About 68 res temp with def guard and ewc brew.
RO+Calamagic+GH flora trio 1:1:1 at 475 ppm
7 or 8 nodes tall at 1ft very vigorous and heathy under 120 watts off 4000k cree cobs.

Today temp warmed a couple degrees and I'm seeing slightest bit of phous def in the lowest leaves. Reading 5.5 ish ph and 420 ppm and down almost a gal maybe from the 475ppm start.

The two first fan leaves are spotting a little and the two first serrated "single" leaves are clear phos def.

I started to mix up 8 cups of add back with only Micro and Bloom at 1:2.25 ratio. At 1600ppm I cannot drop the ph with 4 ml of ph down.

I'm taking a step back here. I think I need to add back at a larger volume less ppm. But should I alter the npk ratio to suite the plants deficiency?

Pictures would really help a lot.

Whoaaaaa, slow down 1600 ppm? You might want to back off a bunch!!!

i use 1:1;1 for seedlings and then i go to 2:2;1 for the rest of veg.

i

Coloradoclear said:

Whoaaaaa, slow down 1600 ppm? You might want to back off a bunch!!!

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hoping that was a typo. if not, those leaves are going to melt

How do I get a 2:2:1 npk with the flora trio?

They are Gro 2-1-6 Micro 5-0-1 Bloom 0-5-4

S'sloegro said:

How do I get a 2:2:1 npk with the flora trio?

They are Gro 2-1-6 Micro 5-0-1 Bloom 0-5-4

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2 parts micro, 2 parts grow, and 1 part bloom. just by volume.

not 2 2 1 npk ratio. you want something like 3 1 2 for veg .

rkymtnman said:

2 parts micro, 2 parts grow, and 1 part bloom. just by volume.

not 2 2 1 npk ratio. you want something like 3 1 2 for veg .

Click to expand...

Ok I will change the whole res to maybe 500 ppm

So you just add the labled npk totals to get your final npk ratio?
So two parts micro, two parts grow, and one bloom gives you a 7-3-5 npk? (Pretty much 3-1-2)

And whats your thoughts on calimagic? Needed that im on RO water?

S'sloegro said:

So you just add the labled npk totals to get your final npk ratio?

Click to expand...

kind of but you need a nute calculator to be sure. there are a bunch of free ones out there. i think hydrogardens com has one for free

S'sloegro said:

So two parts micro, two parts grow, and one bloom gives you a 7-3-5 npk? (Pretty much 3-1-2)

Click to expand...

yeah, close enough. if you look at the GH feedchart, it's pretty much 1;1;1 and then 2;2;1 for veg

S'sloegro said:

Ok I will change the whole res to maybe 500 ppm

So you just add the labled npk totals to get your final npk ratio?
So two parts micro, two parts grow, and one bloom gives you a 7-3-5 npk? (Pretty much 3-1-2)

And whats your thoughts on calimagic? Needed that im on RO water?

Click to expand...

CaliMagic is very needed in RO water.

3-5ml/1tsp per Gallon