going 12/12 change nurt,befor or after ?

[redvetttes]

going to 12/12 ,should i change nurt.at the switch or after a week of light change
1000 HPS
power GH mico grow/ mico blume
any tricks i should know about
ebsom salt ever outher change?
u guys got me this far
thanke

[Stormcooker]

wait a bit before switching nute plan. Or if you need a nut change soon, use half and half (half veg, half flower). My nutrient feed chart combines the two at this stage. Everyone will tell you to wait a bit or do it like this. Good question.

[Stormcooker]

check out GH's website for their recomended feeding schedules. If you JUST use micro and bloom, and no "grow", then you are using one of those custom plans? Search under "lucas formula" for information on when and how to use GH 3-part.

[Stormcooker]

This is courtesy of .... Snaps_Provolone

General Hydroponics Flora Series Feeding Strategy - Lucas Formula

G-M-B (Grow-Micro-Bloom)
0-5-10 - For Vegitative cycle (18/6)
0-8-16 - For Flowering cycle (12/12)

The numbers indicate the number of mililiters of Grow, Micro or Bloom formulas that I use in one gallon (US Liquid) of nutrients.

You will notice I don't use any of the Grow formula, don't need to, the Micro provides plenty of Nitrogen.

There are two ways to work with this formula:

1. Top off the reservoir daily using a pH corrected water solution as required to maintain full reservoir level. After adding back an amount of water equal to the amount of your reservoir capacity you should change the reservoir and put in fresh solution.
2. Top off the reservoir daily using a pH corrected 100% strength nutrient solution as required to maintain full reservoir level. Continue to use this nutrient solution without dumping the tank unless the PPM rises above acceptable levels.

Between vegitative and flowering cycles you should dump your nutrients, then flush (possibly with Clearex) to remove salt buildups, then change to the other feeding program.

For young plants, just transplanted into the hydro setup, give them 50% strength nutrient mix to prevent overfeeding them while their young. Gradually bring up the mix to full strength as they grow over the next few weeks or so.

The lucas formula is normally intended for use with RO or near 0 PPM water.

NOTE: The lucas formula eliminates the need for epsom salts to correct Mg deficiendies in most normal feeding programs recomended by manufacturers. Cannabis needs a lot of Magnesium to thrive. The Flora Micro is providing the Nitrogen and the Mg in the proper balance, thus there is no need for the Grow formula and little or no room under the 'acceptable' PPM limit of 1600 @ 0.7 conversion.

Expected PPM levels:

At .5 conversion:
0-4-8 = 473ppm
0-5-10 = 592ppm
0-8-16 = 947ppm

At .7 conversion:
0-4-8 = 663ppm
0-5-10 = 829ppm
0-8-16 = 1326ppm

Addback Calculator (For Advanced Users)

Say you were running the 0-8-16 formula, at .7 conversion with a 22 gallon res. When you first fill it up, your ppm will be 1330.

Now you have been growing for a week, and some of the water has been taken up by the plants, some has evaporated, and now your res is at 947ppm. You need to get your ppm from 947 to 1330. Here is the equation:

((target-current)/target)*8 mil's per gallon*res gallons = micro double this figure to get bloom mil's

Example:
((1330-947)/1330)*8*22
(383/1330)*8*22
0.3*8*22 = 53 mil's micro

53 mil's micro double that and get 106mils bloom. So 53micro and 106bloom to add back to your 22 gallon res to get you from 947 to 1330.

All courtesy of Snaps_Provolone

[latewood]

change your time and wait a week so that the plants can get over the shock of the time-change, just top off w/ph water for a week then start them on bloom formula, this also serves to flush the extra nitrogen from the plants and they are ready to absorb bloom nutes...hopes this helps

[Stormcooker]

my recomendation to you is to forget the "advanced user addback formula (very confusing)" and just top your resevoir daily with fresh plain water, and change your reservoir every 7-10 days. 7 is better than 10 in my opinion. You can use a little Floraliscious too as a bud booster. Floraliscious is a concentrated organic supplement. It's strong stuff so use lightly. It also smells like a dirty fish tank so be warned

[latewood]

my recomendation to you is to forget the "advanced user addback formula (very confusing)" and just top your resevoir daily with fresh plain water, and change your reservoir every 7-10 days. 7 is better than 10 in my opinion. You can use a little Floraliscious too as a bud booster. Floraliscious is a concentrated organic supplement. It's strong stuff so use lightly. It also smells like a dirty fish tank so be warnedgood advice,
plants use more of some nutrients than other's during a feeding cycle (as your ph shifts your plants uptake of certain nutrients changes and if you add a nute solution as your Topoff, you can have toxic levels of some nutes, so adding ph'd ro/distilled water is your best bet...
never tried the lucas formula, but might try it on a couple of clones this go'round...goodluck..just keep it simple for now and you should be successful!

[redvetttes]

thanks for all the help
I saw a link that show plants and what nurt. they were missing ,cant find it now
any body have it ?
opson salt evey other time ,right {lost one th root rot }
when i do 1000ppm it seams like it hurts them
what a safe and good ppm?
thanks

[Garden Knowm]

I prefer never to let up on the ppm.... BLAST them.. but don't burn em'

You can make the nut transition without lowering the ppm...

Especially if you are going for BIGGEST yield.

: )

[Stormcooker]

I agree with Garden Knowm, I never lowered the ppm's until like a final flush on my first 2 grows. Don't exceed a recomended level of ppm's. I wouldn't exceed the amount that is listed on the bottle itself like Ionic, or GH Flora series. You start low and level out around 1600-1800 ppm's or so. It better to be too low than too high though.

[redvetttes]

1600-1800 WOW
start low ,800ppm? work up ?
when is the time to hit them ? WEEK 5- 8 ?
how long to flush ?
or
how long will plant live with with no nurt. ?
thanks

[latewood]

1600-1800 WOW
start low ,800ppm? work up ?
when is the time to hit them ? WEEK 5- 8 ?
how long to flush ?
or
how long will plant live with with no nurt. ?
thanksyou decide when to flower...you flush the last week or two(this is a personal preference)...I use final phase by Advanced...
a plant can live if you don't give it nutes, it just won't yield as much.

[Stormcooker]

seedlings and cuttings 400-600 ppm pH 5.5-5.8
week 2 from seed 1000-1200 ppm "
week 3-4 1400-1600 "
flowering 1600-1800 ph 5.8-6.1

this is a general idea. Your resullts may vary. some nutrient brands fare well at this level to cannabis, and some may require less.

[redvetttes]

using GH powder grow/bloom 2 part
going to bump it
if i start to see chem burns
wait a wille or delute quick.

[trippruss]

keep it veg nutes until stretch is over, they actually need more nitrogen during this phase than any other due to the rapid growth. the stretch is always strain related, usually 10-14 days+/-. instead of flushing @ end of flowering try 1/2 strength flowering nutes, dont deny your plants any nutes they need @ such a critical time. r