Indoor Think different phosphorus deficiency

[burnngo]

i will test the ph of the soil later today

 

[turtle360]

Hi i have got 2 think different both big strong plants but they were overwatered and they have developed a phosphorus deficiency one of them is quite bad i have been feeding with tap water left to sit for atleast 48 hours been feeding a just over a litre between both of them every 2 days. i now have bio bizz bloom bio bizz root juice and ph adjuster, how much root juice and bloom should i use?

I got it!

I'm not sure what you mean by feeding with tap water left to sit for at least 48 hours...........but, something in your watering regimen sounds off. If I got this right you're watering every 2 days and giving each plant 1/2 liter of water. This is a pint of water if my conversion is correct. That's a very small watering. My plants take at least 1/2 gallon, 64 oz. If you water a 56 day old plant with 1/2 liter and it's still wet two days later it begs the question: what soil are you using? are there holes at the bottom of the pot?

(oh. left out to release impurities)

 

[burnngo]

one pot is an airpot the other a claypot with one large hole in the bottom i would be using more water by now had i not overwatered them, they were last fed yesterday the feed before that was 2 days before but when i watered yesterday soil was extremely dry there condition is still worsening and i now have them in a 2x2x1.2m tent using a 600w and 400w hps with 2 intake fans a carbon filter and a fan sitting in the tent for extra airflow i used biobizz all mix soil. the ph of one of my plants is 6.5 and the other just below 7

 

[Muddy]

I assume those pH readings were the the run off? What was the pH of the feeds. We need both so we can calculate your actual soil pH.

Have you been getting run off with every feeding? If you've only been giving half a liter per plant it's also possible you have a salt buildup in your soil which can lockout nutrient uptake. Salts are a bi product of nutrient utilization and unless they are routinely flushed from the soil, can build up and cause problem.

 

[turtle360]

All I can say is: more than one hole would be better, I still don't see how they can get waterlogged on a pint of water, and that a 600w and 400w sounds big. You can put the two bulbs under one reflector run by one ballast?

The ph numbers look spanky. I'm not sure the validity of them. Maybe Muddy will grade it. How'd you measure it?

 

[burnngo]

i used a ph soil tester and the ph of the feed is 6.5 they are due another feed today, i was getting run off last week but it feels like the soil moisture levels have returned to normal and the soil is not constantly soaking i did not get any run of from the last feed, i will get more pictures later but all affected leaves look like they are shriveling and dying, also before the over water they were getting 1l of water each but my friend gave them 1l each 2 days in a row and that is what started the problems, so i have reduced the feed since then to 1/2 a litre

 

[burnngo]

and no lights are under different reflecters and different ballasts

 

[Muddy]

So you fed at 6.5 and got run off of 6.5 and 7, correct? That would indicate that one pot is spot on and the other is around 7.5, which is way too high. I'm assuming both pots were filled with the same soil, so that seems very unusual. Which one gave the run off of 7, the clay pot? What size are these pots?

 

[burnngo]

it wasnt the run off i measured i used a tester with two poles on it that tests ph light and moisture level, yes the claypot ph was 7 but after todays feed which was 6.5 ph the ph of the soil is showing just over 7 in both pots, both pots have bio bizz all mix in them, the airpot is 10 litre and i am unsure of the clay pot but i would guess 15litre

 

[burnngo]

and also i discovered a very small budsite had fell off the plant today