Wouldn't a truncheon do that for you??? The reason I ask is that I've been proportionally adding nutes.

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I've been wondering around for the past couple of weeks. You know helping people out with towel safety and proper towel use. It's important.

i don't think there's anything out there (in our price range) that can give you a breakdown of specific nute levels. it can give you an overall ppm, but not a readout for each.

But if you follow the feeding ratio won't you have that? For example: If we're using FoxFarm we'd proportionally ad Grow-Big, Tiger-Bloom, Big-Bloom, & Cha-Ching in a 2:1:1:1/4 ratio.

http://www.foxfarmfertilizer.com/hydrofeed.pdf

Wouldn't this maintain the proper NPK levels???

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I've been wondering around for the past couple of weeks. You know helping people out with towel safety and proper towel use. It's important.

in a recirculating rez, as the plant needs/wants certain nutrients, it takes them in. there's no way of knowing what is being utilized and in what proportions. one feed may involve more of one than the other. by replacing your nute strength to your desired ppm will result in too much of one, and not enough of the other. in order to feed at the max ppm at all times w/o worrying about specific nute levels, you have to use a run to waste system. as far as i know, only people who use coco do this run to waste method. and by the way, coco is an awesome medium to grow in!

yes i see what you guys are saying, i have been relying on my nutes instructed levels to maintain the proper ratios , although this may not be perfect it seems to be working for me very well, first grow I had 1.2 or so grams per watt.

but i think to be sure u need to get a truncheon.

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"They must find it difficult...Those who have taken authority as the truth, rather than the truth as authority"

Ya, but aren’t my options ‘Too much of one, but not enough of the other’ vs. ‘Too little of them all?”

Sorry. I get what you’re saying, but I’m still confused... Wouldn’t adding nuted water keep your levels more appropriate? I mean doesn’t replacing with distilled water exacerbate wandering nute levels? Seeing as my manufacturer’s recommendations are the best guess I can come up with, won’t continually feeding keep my levels more in line with what is needed???

For simplicity of math let’s say we have a 10-gallon system on a 10-day cycle and I nute-feed my hydro system per the manufacturer’s recommended ratios to a predetermined strength (ppm.) Let’s say I have 1000 arbitrary units of Nitrogen, Phosphorus, & Potassium (1:1:1 ratio)… But my manufacturer’s recommended strengths aren’t optimum for this plant and it drinks Nitrogen at a rate of 20 units per day, but P & K are consumed at a rate of 10 units per day. If the plant drinks water at a rate of 1-gallon-per-day & I re-fill daily, the ratios would be as follows:

Replace with distilled water:

Day-----N-----P----- K-----Sum:Units
1------1000--1000--1000-----3000
2-------850---925----925-----2700
3-------715---858----858-----2430
4-------594---797----797-----2187
5-------484---742----742-----1968
6-------386---693----693-----1771
7-------297---649----649-----1594
8-------217---609----609-----1435
9-------146---573----573-----1291
10------81----541----541-----1162

But if I replaced with nuted water it would be as follows:

Day-----N-----P------ K-----Sum:Units
1------1000--1000---1000-----3000
2------950----1025---1025----3000
3------900----1050---1050----3000
4------850----1075---1075----3000
5------800----1100---1100----3000
6------750----1125---1125----3000
7------700----1150---1150----3000
8------650----1175---1175----3000
9------600----1200---1200----3000
10-----550----1225---1225----3000

Oh shit! I had to bang that out to realize I’m probably going to burn my plant. Is that what you’re saying?

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I've been wondering around for the past couple of weeks. You know helping people out with towel safety and proper towel use. It's important.

yes sir! there's just no telling what's in the rez. of course the nute company is gonna tell you to add more nutes. the sooner you use them up, the sooner you can give them more mney. in the end, you should do what works best for you. most people i know who use a rez, top it up when it gets low with ph'd water. it gets drained and cleaned and refilled with fresh nutes once a week.

Hey man if you look at you plants every day and say 900 ppm and they look very nice and green keep it that way. observe your plants and they will tell you how they feel.

^^^that's good advice. they'll usually tell you when they're not happy.

Good info. Thanks for holdin' my hand through that Growbot.

Warm regards.

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I've been wondering around for the past couple of weeks. You know helping people out with towel safety and proper towel use. It's important.