more nutes or less with blue widow

[Lazy Haze]

im using 6 x6 rockwool cubes. hand watering drain to waste. 1000w hps in doors. 18 days into flowering. Gh flora. at 1 micro to 2 bloom ratio no grow. 1/4 tea per gallon of powder koolbloom. mixed to 1000 ppm at the present time. do these plants need more ppm or less? more nutes? are they getting burnt? any help much appreciated. im asking because gh's nute calculater says that you should not go over 850ppm. i did that for the first few weeks and just a few days ago went to 1000ppm when i saw yellowing and small bud development lower in the plant

Lazy Haze Reviewed by Lazy Haze on 01-10-2012. more nutes or less with blue widow im using 6 x6 rockwool cubes. hand watering drain to waste. 1000w hps in doors. 18 days into flowering. Gh flora. at 1 micro to 2 bloom ratio no grow. 1/4 tea per gallon of powder koolbloom. mixed to 1000 ppm at the present time. do these plants need more ppm or less? more nutes? are they getting burnt? any help much appreciated. im asking because gh's nute calculater says that you should not go over 850ppm. i did that for the first few weeks and just a few days ago went to 1000ppm when i saw Rating: 5

[JeffersonStateGrower]

This seems to me to be more of a soil type grow and ppm concerns are geared more toward hydro with a reclaiming feeding system, although I can see some pertinenance being you are just using rockwool. Now in my opinion, not that the nutrients you are using are bad, which they are not, but I would get some fertilizers that are formulated more toward hand feeding and if your are going to hand feed I would recommend using a good organic soil with bone meal and earthworm castings in stead of the rockwool.

It does look like some of the tips are burning a little bit to me but it also looks like your plant wants more root space. How many plants are under that 1000w?

[CanGroIt]

1000ppm isn't too strong IMO....not for a plant that size....especially if you've been gradually increasing ppms with growth.... If the plant doesn't react negatively, give it 1k ppms for a week and increase to 1100 the next.... Flush thoroughly if negative affects appear.... If none appear, gradually increase.... 1800ppm is the highest I've run before running into negative affects....but that's just me....

Just my :twocents:....

CGI::::::

[GanjaRobPDX]

PPM/TDS is very important regardless of grow system.
The brown leaf tips are a sign of over feeding. back your food off by 100-150ppm.
The yellowing of the leaves is a result of your using the koolbloom. It's ok. just add some nitrogen to your nutrients. The nitrogen will bump your PPM up, but because the plant is in need of the nitrogen, it wont burn the plant. Try for the 850-900ppm and use the nitrogen to bump it to 950-1000ppm.
Basicly your plant will need more N as you increase your P and K levels.

When you see your leaf tips begin to brown or curl even slightly, back off the PPM.

When your leaves yellow, add nitrogen (just enough to get them to re-green).

If you see your leaves begin to get dark green and curl downward, back off the N.

When in flower, try not to over do the N as it will hinder flowering and bud production. Too little N and your leaves will yellow and hinder bud production.

If you have more nute questions, just PM me or post again.

Again, as it stands, your PPM are too high right now and you will need more N in your next feed or two.

hope this helps...

[Lazy Haze]

im definately staying soiless, first of all.....thanx ganjarob. i appreciate the info. ill do as you say and add some grow (N). i thought that it was best to eliminate the N considering that micro has alot. so the GH nute calculater must be close with ppm for waste to drain (850), though their reciculating calculation seems high at 1400ppm max bloom. i figured that when the plant started to yellow i needed to raise the ppm. the problem ive had in the past is that the leaf tips seem to brown even at relatively low ppm (600-700). i used to do recirculating and then watch the ppm as the reservior drained . if it went up i decreased the nutes if it went down i increased . but i never got past 700-800ppm that way. does that sound normal. thats less than the drain to waste levels. thats why i went to drain to waste but its my first time so i need nute strength/ratio help. wha t do you think of can grow it's answer of going to 1800ppm?? thanx for helping too CGI, but these answers are conflicting somewhat, just trying to get the right advise

[CanGroIt]

Conflicting....on the Internet??? Noooooo.... It'll almost always happen....when asking for advice....

I go up to 1800 only if I know the plants can handle it.... Some strains can....some cannot.... It's up to me as the grower to pay attention to what my plant are telling me....

What is your feed/water schedule??? Have you flushed them any time???

CGI::::::

[Lazy Haze]

i hear ya bout the internet !!! i water for about 20 min each morning with my recirculating system, with 2 gal an hour drip emitters. that has 3 ft slabs. the widow in the block i water drain to waste when it starts to dry alot,,,,about every 2 days. i have flushed the rockwool. i have b een growing with the reciculating system for years and the "watch the ppm level in the res" worked fine but not fantastic and i never got over 800ppm that way). thats why im trying the blocks with drain to waste. i heard its easier to control than the slabs. problem with the slabs is when you flush you saturate the slabs and risk root rot overwatering. do you suggest watering the block (drain to waste) increasing strength from the 1100ppm??? i guess what im asking is . i have increased the nute strength to 1000ppm in the pix...are my plants telling you that it needs more nutes overall? or just N. also i havent had a grow in 10 years that didnt have leaf tip burn. recipe is gh flora 3 pt 0 grow 1micro 2 bloom ratio with 1/4 tea per gallon koolbloom. i read a thread that suggests i use 1/4 grow in the ratio with this recipe

[Lazy Haze]

ive already watered with Ganjas advise before i read yours CGI. so ill do another watering feeding as he suggested.....if no results ....ill bump it up as you suggest. lets see what works in this application anyway. keep in touch with me guys !!! my next grow will be all 6 x6 cubes so i need to dial in on this ASAP !! and thanx again for the help.

[CanGroIt]

Sounds good :thumbsup:....

CGI::::::

[Mr.Pink]

~ I could guese at what exactly the problem is but..... it seems you are getting good advice, there is always trial and error, one thing I can think of that no one seems to have touched on (i only skimmed through replys) Is those charts are usually geared towards high lumen (footcandle) gardens. Lets say 9000 lumens to the tops, 10,000 being ideal or at least 1000 watt HPS lights. I you are using a 4oo or LED, Or whatever you may want to cut your food back whatever percentage your light is less than 1ooow. So a 400 watt hps would be 40% the food, or a 600 watt, 60% the food. This is NOT accurate mind you 600 can be placed closer , and yadda yadda, but plants really go through food in high light situations, and may only sip in low. All im trying to say is the chart is only an estimate, not a rule. I have heard great things about drain to waste rockwool, I have never tried it, Peace.