I'm back again .. yellowing bottom leaves

[compz 58]

So Mr Paranoid is back again pmsl ....last feed on the 18th I gave in and mixed some grow feed in (intense soil grow half strength 1.5ml / litre) to go with the intense foundation (4ml/litre) and calmag (1ml/litre). 24 hours later I had some yellowing on the tips of the new growth .. oops. However they seem to have recovered nicely ! No more feed for them just the calmag and foundation for now !

 

Yesterday evening the bottom leaves had started turning yellow eeek !   It was watering time (was 1/4 litre every 4 days) however they seemed drier than normal so upped it to 1/2 litre each of jug filtered water with nothing in (very hard water area however a jug filter takes the worst off ..not ideal but seems ok). Checking the temps they were high .. roots were 26.1 C, ambient 28-29.8 C, RH 40 % but they have always been high.   I bypassed the variac and put extraction on full and intake on full (it's on a low setting on the unit by jumper so still negative pressure). I adjusted the heat mat to kick in at 22C instead of 24C. 

 

Temps today are 25.1 at the roots, 26.7 ambient., 37-39% RH.  All three are showing a some yellowing though only on the bottom leaves. 

 

Lighting is at 352W LED (wall measurement) .  Tent is 4x2x5 . There is a small axial fan blowing air from top to bottom via a diffuser. May change this to a normal fan . 

 

Not sure if this is natural or if something is going wrong - if so I would really like to sort it asap - been really pleased with this as a first grow (in the diaries section) . The three plants that are smaller (not in photo) are a week behind and other than one thats a bit of a mutant don't seem to have the issue . 

 

Thank's everyone .. look forward to hearing any thoughts before I try and take any remedial action (no idea so thought I had better hold off !) 

 

Thanks

 

Compz 

 

 

[Bodidley 49]

I wouldnt say theres much to worry about there mate , that does happen , youve done the right thing easing up on the feed , apart from that their a nice healthy colour .

[ratdog 110,312]

2 hours ago, compz said:

It was watering time (was 1/4 litre every 4 days) however they seemed drier than normal so upped it to 1/2 litre each

 

 

You really want to be soaking the pots now mate, then i would aim for 80% dry then repeat. you might want to add a little bit of feed now too

 

they look fine otherwise

[Bartyfartblast 1,836]

Unless that soil is completely inert shite you shouldnt need to pile on all the nutes for 3 -4 weeks . 

Plants are short and bushy so that doesnt really bode well for the lower/first leaves I expect the singles have already gone. Nothing to worry about , less fussing and feeding methinks. 

 

good luck 

 

[compz 58]

It is mills light compost.  Free trees and all sorts (won't be buying it again lol).

 

Cheers everyone .... Given the girls a couple of litres on top of the half litre last night (18 litre pots as they are autos) so will leave them alone now !

 

They are short but there's 4/5 nodes in there!

 

Just tucked a few of the larger leaves under the smaller nodes to give them a chance .... See what happens over next few days.

 

Compz

[Guest]

Mills coco, soil and most of their nutrients are wank.

 

Root temps are too high 25C and root rot can develop quite quickly.  18-23C is a better range, 24C ideally being max.