Autopot Biotabs and a little fertilizet

C

Cocktrauma

Well-Known Member
High my friends
I am currently on my first Autopot grow and mixed the following:

45% Perlite
5% Vermiculite
10% Cocos
40% Allmix Biobizz

Fertilizer:

3 Biotaps
1TbspMykorrhiza Soluble
1Tbsp Startrex Biochar
1Tbsp Guano Pellets

A few drops CalMg/Si added to the Water to EC 0.4 in total

CMH Lamp 315w with 2x44w 660nm Led
Temp around 27C and 62%RH

The girls are day 49 in Flower now.
They started to show some yellow/brown/crispy Spots and I added some Biobizz Bloom fertilizer but it got worse...
Should I worry about it or is it just the end of my plant coming and everything should be fine?
I guess I'll chop them in 2 weeks.

Thanks for your help ;)
Stay high and healthy
 

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T

Treesomewanted77

Well-Known Member
Cocktrauma said:
High my friends
I am currently on my first Autopot grow and mixed the following:

45% Perlite
5% Vermiculite
10% Cocos
40% Allmix Biobizz

Fertilizer:

3 Biotaps
1TbspMykorrhiza Soluble
1Tbsp Startrex Biochar
1Tbsp Guano Pellets

A few drops CalMg/Si added to the Water to EC 0.4 in total

CMH Lamp 315w with 2x44w 660nm Led
Temp around 27C and 62%RH

The girls are day 49 in Flower now.
They started to show some yellow/brown/crispy Spots and I added some Biobizz Bloom fertilizer but it got worse...
Should I worry about it or is it just the end of my plant coming and everything should be fine?
I guess I'll chop them in 2 weeks.

Thanks for your help ;)
Stay high and healthy
Click to expand...
They look really hungry to me. I don’t think the things you added will carry them the whole way so you will need to feed them.
 
C

Cocktrauma

Well-Known Member
I thought the same but the problems got worse after I've feed them with some fertilizers
It was just a little and after I topfeed them with 3l 1.4 EC biobloom it got stronger.
Could the top feed (autopot is feeding from the bottom) be a problem?
 
Under the Radar

Under the Radar

Well-Known Member
Top watering is not recommended after turning the system on. Once you start bottom feeding you need to continue bottom feeding.

By turning off the reservoir and waiting (I use a wet dry vacuum and clear the tray quick so I can keep moving) for the tray to dry out you can then fill the tray with fed.

Finding the right balance in autopots is tricky. Soil can do well for some, salts for others. The mineral content of your starting water can have an affect to.

Looking at the Biobizz website they have a detailed fertilizing schedule. If you were to follow that I’d only use 50-75% of the recommendations in the reservoir and pH appropriately.

What is the pH of the reservoir?
 
Last edited:
T

Treesomewanted77

Well-Known Member
Under the Radar said:
Top watering is not recommended after turning the system on. Once you start bottom feeding you need to continue bottom feeding.

By turning off the reservoir and waiting (I use a wet dry vacuum and clear the tray quick so I can keep moving) for the tray to dry out you can then fill the tray with fed.

Finding the right balance in autopots is tricky. Soil can do well for some, salts for others. The mineral content of your starting water can have an affect to.

Looking at the Biobizz website they have a detailed fertilizing schedule. If you were to follow that I’d only use 50-75% of the recommendations in the reservoir and pH appropriately.

What is the pH of the reservoir?
Click to expand...
I have used the auto pots with top feed from start to finish drain to waste style and it worked great. I just used the feed tray as the drain pan and watered daily to runoff and never got any salt build up or any issue for that matter. I also have ran the oxygen domes and they didn’t help really at all. The bottom feed works well if you do use like under said with the wet dry cycles but I had issues with valves sticking and flooding so only tried it once before switching to drain to waste.
 
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