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SANoob

Member
SANoob do you not have aquariums in SA? You can pick up a ph test kit for cheap from any tropical fish store. Not the best things in the world but its better than nothing.
I never thought of that. Maybe ill go grab on of those. The only issue is that the kits i have just found at the fish shops don't have any ph up or down adjustors.
 

coreywebster

Well-Known Member
I never thought of that. Maybe ill go grab on of those. The only issue is that the kits i have just found at the fish shops don't have any ph up or down adjustors.
You would of thought the fact they sell kits to test PH would mean they also sell PH adjusters or what would be the point of a PH kit if you cant adjust it? There's ways round that if it is the case, household products can be used but I would recommend proper PH down.
 

SANoob

Member
You would of thought the fact they sell kits to test PH would mean they also sell PH adjusters or what would be the point of a PH kit if you cant adjust it? There's ways round that if it is the case, household products can be used but I would recommend proper PH down.
Yeah i would have thought so too. Hopefully when i get the chance to go there they will have.
 

SANoob

Member
Use the tap water. That ph should counteract the acid in the soil. Those size of plants, depending on how much fish liquid is in the soil. Shouldn't need more nutes for two weeks. A solid 14 days. Some of the nitrogen in the fish fertilizer is slow release. Other ingredients are quickly absorbed. The plants need to use what's already in the soil and their root system isn't that big yet.

One thing about cannabis is it'll clean the soil. But the PH has to right. 6.5-7.0. If not, they'll continue to struggle.

Ok so for the next 3 waterings I should flush 25 percent of the water i add out the bottom? after that normal watering for 2 weeks and then after that do I give the nitrosol another shot or use the gwano pellets instead?
 

SANoob

Member
Use the tap water. That ph should counteract the acid in the soil. Those size of plants, depending on how much fish liquid is in the soil. Shouldn't need more nutes for two weeks. A solid 14 days. Some of the nitrogen in the fish fertilizer is slow release. Other ingredients are quickly absorbed. The plants need to use what's already in the soil and their root system isn't that big yet.

One thing about cannabis is it'll clean the soil. But the PH has to right. 6.5-7.0. If not, they'll continue to struggle.
Alright so i watered yesterday with tap water and let 25 percent drain out yet today the plants are even more yellow, the leaves are curling and they generally look worse off then yesterday. Is that what is supposed to happen?
 

SANoob

Member
Could you add pics? How was the soil looking in terms of moisture before you watered?

Ill upload one just now when get the time. The soil was moist at the bottom but the top inch and a half was dry. Could have gone without a water for another day or so but i thought it might be better to flush the plants a bit and try to somewhat improves the soil ph.
 

Strocat

Well-Known Member
you can use baking soda and white vinegar for ph up and down in case you cant get ph up and down by general hydro etc.

I would lower lights real close if cfl's and up the wattage.. I would find a way to get your nutrient solution or plain water to 6.5 ph and keep it always at 6.5 ph... after a few weeks.. it will help your soil get closer to the 6.5-7 range.

I personally always feed with 6.5 ph solution or plain water and my runoff is always anywhere from 6.5-6.8
 

SANoob

Member
OK so i have to do something today or my plants are dead. i tried doing the flushing thing as was explain above but the plants just got worse and are now even more yellow and sickly
 

Buba Blend

Well-Known Member
Alright.
So i am in South Africa good going medium for weed isn't readily available so i did the best i could by mixing 50 percent compost,20 percent pearlite and 30 percent potting soil. (not optimal i know but it is my first grow so it was the best i could do).
Nutes are nitrosol by greena gardens. Used once a week for two weeks but stopped cause nute burn and nitrogen toxicity started showing.
Watering schedule is half a cup every second day.
The plants are 6 weeks old.
Topped 2 weeks ago
Changed into 12/12 lighting yesterday.
Grow space is small about 45 cm wide by 60cm deep by 130 cm high.
Using a 150 watt HPS bulb.
only planning on growing 2 plants in the grow space but first have to sex them.
Oh i also don't have anyway to test the ph of the nutes or water i am giving them i know this is an issue but there isn't much i can do about it
OK so i have to do something today or my plants are dead. i tried doing the flushing thing as was explain above but the plants just got worse and are now even more yellow and sickly
1st thing I would say is it is a mistake to have switched to 12/12 light while they are so unhealthy. If you just made the switch to 12/12 recently and they show no sign of flowering yet, I'd go back to 16 on 8 off and try to get them in better shape before trying to flower them.
You were watering a half cup of water every other day in what looks like 12 liters of soil. That sounds like to little water.
It might be helpful info if you could weigh a pot of your soil mix that you know is dry. Also weigh the pots you just watered then again when you plan to water. This could help determine if you are using enough water and if you are letting them dry out enough before watering again.
 
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SANoob

Member
Ok so to those of you that were following this thread I ended up figuring out what was wrong. Because i am using such a small grow space the plants were getting way to much light. I moved the light as high up as i could and the plants bounced back pretty fast.

Here is what the plant that was in the far back right looks like now.
 

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SANoob

Member
And yeah i know the plant still isn't 100% but compared to what it was last week it is a huge improvement.
 
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