JimmyTheJaw
Active Member
250 watt hps
week 4 of flowering
used big bud once, 6 days ago, 2ml per litre
i use bio bloom as my normal nutes, 3 days ago, 3 ml per litre
run off ph is 6.02
not sure of soil brand, john innes i think
whats wrong here then?
- Thread starter JimmyTheJaw
- Start date
250 watt hps
week 4 of flowering
used big bud once, 6 days ago, 2ml per litre
i use bio bloom as my normal nutes, 3 days ago, 3 ml per litre
run off ph is 6.02
not sure of soil brand, john innes i think
oJUICEBOXo
Active Member
Looks like a phosphorus/magnesium/calcium deficiency to me. Plus they look kinda pale, give them a little more nitrogen. You can raise your PH as well. As you can see by this chart calcium and magnesium get locked out in soil at 6.4 and under...
View attachment 1147888
View attachment 1147888
JimmyTheJaw
Active Member
fan leaves yellowing then browning on lower leaves, fan leave stems are red/purple
superbak3d
Well-Known Member
up your ph slightly like juicebox suggested.
If your run off is 6.0, your actual water must be around 5.5 or lower, which is locking out calcium and magnesium.
Or just add some calmag.
Either way, you should be aiming at 6.5 for soil indicated by the chart.
If your run off is 6.0, your actual water must be around 5.5 or lower, which is locking out calcium and magnesium.
Or just add some calmag.
Either way, you should be aiming at 6.5 for soil indicated by the chart.
JimmyTheJaw
Active Member
so you think it is a ph problem? i ph test my water to 6.5, as close as i can get it anyway, ph meter has not been calibrated ina while though, might need to calibrate it
oJUICEBOXo
Active Member
Even if he added calmag it wouldn't help any because his PH is too low for the plant to absorb it. Raise your PH to 6.5, leave it for a couple days and if it doesn't look better add calmag. There could be plenty of cal/mag already in the soil but the plant can't absorb it.
superbak3d
Well-Known Member
True, I didnt even think of that. Silly stoners.
Even if he did add calmag your absolutely correct, it would still get locked out from low ph.
JimmyTheJaw
Active Member
so i dont have acces to anything to raise the ph, if i flush it with slightly high ph water will this raide the ph, if a get the water to 7.5 and flush it with that?
