Unknown Cheese Strain Giving Me Some EC Trouble

CheeseMouse

New Member
Hi guys,

I'm new to RUI although I've been reading here on and off for a while. I've registered because I've got a problem with an Unknown Cheese strain I'm growing.

I've just got the one plant which has been vegging for around 10 weeks althoug two of those were spent re-rooting after bringing her back from the brink of death when root rot took hold.
Had to trim the whole ball back to nothing and she re-rooted and came booming back :grin:

Anyhoo, she's now 6 weeks into flower and is under two 600 watt HPS lamps. Both in cool tubes, one mounted vertically at the side of the plant and one mounted horizontally and I rotate the plant about 1/4 turn daily to ensure the plant gets a decent coverage.

She's being grown in a home made 50 litre bubble bucket and is being fed Genesis 3 part formula. The bubbler is made from one of those 50 litre storage tubs and has no water pumps or anything. She does have a 6 inch airstone which sits directly below the net pot and is fed by a 60 litre per minute air pump.

The problem is, the EC is all over the place and I can't seem to level her off to the point she's happy. It hasn't helped that about a week ago I noticed my PH meter had cracked and was giving me incorrect readings so I've been chasing the PH about with some brewing PH strips while waiting for a replacement. I've now got a replacement PH meter and have settled my PH back to around 5.6 and it usually doesn't rise too much too quick but the EC seems to always be on the rise no matter how weak I make the nute solution.

Up until about a 10 - 14 days or so ago, she seemed happy around 1.4 - 1.5 but then I noticed a horrible smell coming out of the res, like ponds - it just appeared literally overnight. One minute there was no smell (and I'm often sniffing my tank) then the next, it stinks like a pond and I knew what it was. Despite changing the water nearly 3 times in one week there was the smell of ponds. At which point I stopped the feed which I was trying to re-introduce from all the previous upset and put her back on a regime of nothing but water, regenaroot and wiltguard, all at 1/4 strength taking the EC to about 0.9 including background tapwater ec. Incidentally, my tap water EC is already around 0.4 - 0.6 and I include it when I set my EC.

After about 4 - 5 days under this regime (having changed the solution twice in this time to clean it all out) I've tried to put her back on feed but she just doesn't seem to want to know.
At the moment she's even objecting to food at an EC of 1.08 which is not much above my tap water's ec.

For the past three or four days she's been drinking water and leaving the food. If I top the res back up to the original mark in the morning, the EC is back to bang on 1.08.

I've tried everything I can think of but it seems like even on tap water she's raising the EC :S

It's got me so confused I'm beginning to doubt even the basics of growing which I know are set in stone LOL

The odd thing is, the plant looks for the most part very healthy and she's definitely putting on the weight. My aim was to keep her as green as possible right up until the flush before harvest and for the most parts I've done that although I'm now seeing around 7 or 8 large fan leaves which are starting to yellow which I take to mean the plant is eating itself meaning she's not being fed with what I'm giving her.

I know at some point I was running my nutes too high but that was back at like week 3 as I was starting to knock off the N and increase the P and K and I caught that in time as far as I know because it was the very end tip of some of the leafs starting to go white / yellow which made me realise and that's now stopped since correcting it and there is no sign of nute burn anywhere. It is really really puzzling. It's like the EC is telling me I'm over feeding her but she's not acting like it. There's no burning, there can't be a build up of unused nutrients since she hasn't sat in a res full of the same nutes for longer than 5 days since I've been noticing the problem and I seem to be continually backing off the strength only for her to still not be happy.

I've checked the calibration of my EC and PH pens recently and they're reporting in fine so I really don't know what the hell is going on.

I read so many counter intuitive things that seem to make sense like maybe the EC in the solution is too low and the plant is spitting back the crap in the tank in an attempt equalise itself because the EC is higer in the plant than the res but I then read this only applies if the water hasn't dropped... I really don't know what to think.

All I'm doing at the moment is topping up every day with just PH adjusted water which brings the EC back to where it was.

Another odd thing about this strain... The friend who donated it to me (he got it off someone else so he can't tell me much about it) seems to drown his plant in food whether it wants it or not and they do great.
I've seen his plants and he never pulls less than 15 ozzies off a plant under a 600HPS. He vegges for around the same time as me 4 - 6 weeks.
He's always telling me how he set's the EC such and such level and the next day they're way higher (I'm not saying he's the most clued up grower) and the PH is all over the place due to the plant roots usually overtaking the bubblers he's using so they don't hold the volume of water they should. I really don't know how he does it. If he were 6 weeks into flower he'd be feeding his around 1.9 - 2.1 EC whether or not it drinks the water and leaves the food :S
I wouldn't believe it if I hadn't seen it with my own eyes. This guy is a good friend (not really too clued up about the technical stuff) not a friend of a friend of a friend.

I'm not saying my plant won't pull any weight being under 1.2KW of light, they're not looking too bad for week 6, got some lovely colas but if I want to pull the most out of this plant, I've got to get her and keep her happy which the res is telling me she isn't. Although she may look green over 99% of her canopy, this will quickly change if I don't sort out what the EC is telling me and I need to solar panels to stay nice n green for as log as possible.


Sorry for the long post but I like to try to cover all the info I can.


Any thoughts / opinions / more info needed???


Thanks!!! :grin: :grin: :grin:
 
Ok so I've checked again this morning and the plant has drank around 2.5 - 3 litres of just water since I topped her up last night with plain PH water before lights out. Daily (i.e. a full 24 hour cycle) she can drink anywhere up to 8 -10 litres.
Lights have been on for around 3 hours before I got in this morning and the EC had risen overnight from 1.08 to 1.19 and the PH had risen from 5.7 to near 6.0

Only course of action I can really take is to flush, yet again and replace all liquid with plain PH adjusted water (no additives at all) which I've just done.
EC is now at 0.7 (tap water background EC) and PH is at 5.7 - 5.8.

I've managed to post some pics to my album although I have to say it was an utter ball ache trying to find the upload button which turned out to be a text link almost as dark as the background it sits on :S

cheesemouse-591646-albums-misc-pics-picture2627898-unknown-cheese-strain-pic-3.jpg


cheesemouse-591646-albums-misc-pics-picture2627897-unknown-cheese-strain-pic-2.jpg


cheesemouse-591646-albums-misc-pics-picture2627896-unknown-cheese-strain-pic-1.jpg


Up until around 7 - 10 days ago, she was lovely and green all over, now I just can't seem to please her.. Then again, she is a female LMFAO :D :D j/k.


The res smells nice n clean and the roots are lovely and white as they have been since she re-rooted from her early root rot during veg so I really can't explain what that rotten smell was around 10 days back, especially since I've been changing the res on a frequency that works out to as much as 3 times a week.

She's supposedly an 8 - 9 week strain and this coming Saturday will be the start of week 7 so I really can't see her making her full potential now.
I was hoping to pull somewhere near 10 - 15oz from this girl but I can't see that happening looking at her.

Time will tell I guess but I really don't know what's going on with the EC :S

Just to quickly add, I can tell you this much, in the past, I've had adult plants (different strain) live and grow (in veg) practically just on tap water with well below the recommended feed level. I don't know what's in this stuff but I gotta get me a RO system. I've got my eye on an aquarium 3 stage RO filter system which is under £50 inc delivery so I plan on getting one for my next run. Outside my room I have a 100 litre storage tank where I keep my weekly supply. There it stands for a min of 24 hours before use to dechlorinate and oxygenate with the airstones I've put in. I reckon I would need the 100GPD RO system in order to fill up a 100 Litre storage drum without it taking all day.
Any thoughts on that from other RO users??
 
Hi

I feel your pain ive had same problems through out my latest grow, I'm in a flood an drain system an its only a few my plants that are like this the rest are doing fine in the same system.

The RO filter thing also depends on the pressure of your water, Ive not got one myself just been reading up on them too as thats my next buy also. So if you have rubbish pressure with your water dont expect to hit the numbers the system is saying it can do.
 
Hey machead, thanks for stopping by.

Well, in the absence of any input from anyone else and consequently no advice or suggestions to follow, looks like I'm just gonna have to keep going and hope for the best.

Seems a bit dead round these parts if you ask me - maybe time to try somewhere else.


E2A:- Requested account closure. Going back to anonymous reader status. Found my answers on another board so don't have need for this account; plus this place is too quiet for me. Laters RIU. Thx for having me.
 
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