delayed affects ?

[epsteinbar]

well im thinking ive got a magnesium problem from trying to figure this out myself , idunno though
about a week ago i wasnt able to check on my rez and let the ph go up to 7.6 that was for about 18 hours , the next day i noticed the lower leaves looking alittle funny but figured it was just from the ph the day before
i adjusted the ph back down and the plants seemed to kinda stall for a few days but id say the last 3 days they have started to grow fast but the
leaves that seemed to have been damaged from the ph are now really looking
sick like over night almost they went from looking allitle funny to for sure sick
heres a pic of one of the two lower fan leaves that have acted up



this is what the leave started to look like before it did like the one above



any ideas ? is this common im just seeing the after effects ?



What STRAIN are you growing? bagseed
What was the establishing technique? (Were the seed or clone?) seed
What is the age of your plants? 4 weeks from seed
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? vegetative
What Technique are you using? dwc
What substrate/medium are you using?(Hydroton, RockWool etc.) lavarock and perlite
What is the Water temperature? 64 f
What Nutrient's are you using? How much of each if using multiple? technaflora bc nutes 3 part boost grow and bloom , less then the recipe calls for on their site
What is the TDS/EC/PPM you are using? 400 ppm
What is the pH of the "Tank"? 5.7
Are you sure your calibration is correct on your equiptment? yes
When was your last watering? n/a
When was your last feeding change? (ie. grow-bloom-micro-additional)
What size bulb are you using? 400hps
What is the distance to the canopy? 10 inchs
What is your RH Factor? 40 - 49
What is the Day/Night Temp? (Include flucutaion range) 74 f lights on 61 f off
What is the current Air Flow? (cfm etc.) pc fan blowing across canopy tops
Is the fan blowing directly at plants? yes over the tops
Is your water HARD or SOFT? hard but use RO water
Has plant been recently pruned, cloned off of or pinched no
Have any pest chemicals been used? If so, What and When? no
Are plant's infected with pest's no

 

[B.C.]

Hello

Hello

I think ya hit the nail on the head.Yer ph going high locked out some nutes and yer jus now seein the affects.Steady the course and I think everything will be fine.Good luck! Take care...BC

 

[epsteinbar]

cool , cool thanx for the quick reply !!!

also does letting the ph swing out of wack let the elements perciptate out of the solution ? should have i changed the rez and remixed nutes ?

 

[B.C.]

Ya know,that's a very good point.Yes,because yer ph bein outa wack will let it feed on some nutes (mostly micros involved here) and not others.Hard ta say how much it would affect it,but it would.Jus ta be safe that would be a good idea.Good thinkin,I didn't even think ta mention it,sorry.Take care...BC

 

[B.C.]

lol DEE,DEE,DEE!

lol DEE,DEE,DEE!

Went and looked up "precipitate". No I don't think it will brake down yer nute solution in that sense.But because of the ph imbalance yer nute solution may be short on somethings and strong on others (again prolly jus micros).Sorry fer the confusion! lol I need ta smoke some more.later, BC

 

[epsteinbar]

hehe, thanx again !!!

i just went and changed out my rez and cleaned it , man i hope all is good this hobby
has broke me just getting this far !!