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  #1  
Old 10-20-2019, 03:15 AM
Vlad the Inhaler's Avatar
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Default Recirculating hydro.

Hi everyone.
I have grown with soil, soiless media and coco. I've always ran to waste.

I recently got some nice seed that doesn't need veg time, cos the cuts stretch hard.
So I want to go more advanced hydro.

Can I get some tips on recirculating hydro formula, pls?
I want to use pumice as the media, with a little bit of local gravel.

I read to mix 10 days of solution.
Top up the water lost every day.
Replace the solution after 7 days.

Is that kind of right, I don't really know.
How often do I flush also.
I'm looking at about 75 day bloom with 5 days vegging.
Thanks

Last edited by Vlad the Inhaler; 10-20-2019 at 07:30 AM.
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  #2  
Old 10-20-2019, 07:42 AM
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Quote:
Originally Posted by Vlad the Inhaler View Post
Hi everyone.
I have grown with soil, soiless media and coco. I've always ran to waste.

I recently got some nice seed that doesn't need veg time, cos the cuts stretch hard.
So I want to go more advanced hydro.

Can I get some tips on recirculating hydro formula, pls?
I want to use pumice as the media, with a little bit of local gravel.

I read to mix 10 days of solution.
Top up the water lost every day.
Replace the solution after 7 days.

Is that kind of right, I don't really know.
How often do I flush also.
I'm looking at about 75 day bloom with 5 days vegging.
Thanks
How big is your bucket/tub and are there more than one? Your set up will determine the frequency of Res changes and top ups with/without nutes etc...
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  #3  
Old 10-20-2019, 08:55 AM
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Thanks man.
I've got 20*3gallon double pots now.
They have a full grid bottom on the inner bucket, for air interchange. Like a rocket pot, but only on the base.
I can go 5 gallon.
Or even replace them with double spiral pots, that r a lot like rocket pots

I have a 7m*7m double shed.
Everything else can be replaced.
So how do I work it out?
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  #4  
Old 10-20-2019, 10:46 PM
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So I gather it's got to do with the size of my reservoir, and the amount of plants I have.
Total liquid and how much is being lost daily through evaporation and transpiration by the plants.
So I can't just say I have X about of bucketed n a y size tank.

Can anyone give me a rough idea though.

How many days of solution do I want to have in a good sized reservoir?
How many days do I circulate it before replacing it?
How often and how long do I flush for on the grow?
Cheers.

Last edited by Vlad the Inhaler; 10-20-2019 at 11:05 PM.
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  #5  
Old 10-20-2019, 11:56 PM
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Howdy Vlad.
For the past year and some change Ive been running a recirculated ebb and flo with coco as the medium.
Heres the basics of what Ive been taught by a true master of the subject:

I use 26gallons for the res capacity and that is for 12 2 gallon buckets.
I run each reservoir for 14 days, topping off with phd water to keep the reservoir full.
A key component is allowing the ph to swing from approx 5.6 all the way up to 6.2 during that two weeks. Keeping it at a constant ph value will give you trouble.

I run a perpetual and never flush with no complaints from any lungs who inhale my buds.

Hopefully that helps answer your questions
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  #6  
Old 10-21-2019, 12:37 AM
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The only thing I will add is I shoot for a Ppm of about 600 to begin with and generally try to keep it below say 750. I generally try to run it down to about 300-400 in the last week, but as Jake said, no complaints about harshness.

Good luck and good growing.
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  #7  
Old 10-21-2019, 06:11 AM
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Quote:
Originally Posted by Vlad the Inhaler View Post
So I gather it's got to do with the size of my reservoir, and the amount of plants I have.
Total liquid and how much is being lost daily through evaporation and transpiration by the plants.
So I can't just say I have X about of bucketed n a y size tank.

Can anyone give me a rough idea though.

How many days of solution do I want to have in a good sized reservoir?
How many days do I circulate it before replacing it?
How often and how long do I flush for on the grow?
Cheers.
20 buckets for a first time is a big gamble. There are too many variables that can go wrong on you.

If you started with a 30Gal Res and 4 or 8 (5gal) buckets, might be a bit more fun to run.

Will you be using a giant air pump for 20 stones?
Will you be using a chiller? Ideal water temps need to be 65-68F.

Can you show me a pic of the set up? I may be better able to help, like that.
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Howard = Jim Morrison
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  #8  
Old 10-21-2019, 03:19 PM
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IHey Jake and Plant man, thanks for that, it's gold.

Zimbo, I have 20 buckets now I use for soil n stuff.
I got enough power to run maybe 1000+2*750w DE hps. So around 5 metres.
You're right, 4-8 pots at first will be easier to learn. I'll just run the rest organic until I get it sussed.
I'm thinking I run pumice with gravel media and trickle flow irrigation.
Any advice on the size of pebbles to use?
The gravel (<20%) will probably be perlite sized.
Should I get the pumice the size of expanded clay?
I want to activate it with root zone friendlies.

Last edited by Vlad the Inhaler; 10-22-2019 at 03:03 AM.
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  #9  
Old 10-22-2019, 12:54 AM
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The pumice is pretty interesting. It's from New Zealand.
Really lightweight and porous.
It should hold water well enough, and lots of area for the friendlie to live.
I've seen some pics online of stone grown gardens, with quite large pieces. Almost like smashed bricks. Larger then clay pebbles.
My local store sells two screens mainly.
One the size of perlite, the other like clay pebbles.
And a mix.
They reckon a lot is sold to orchid growers, as it's great for drainage.

The local gravel is blue stone granite.
It has little chunks of orthoclase.
That one I will use a small size. As long as I soak it to remove dust, so it doesn't clog my system.
I first used it in my soil mix after I noticed some experiments out state agricultural research department was doing top dressing tree farms with it.
They were showing less DNA damage markers in the tree, due to uv damage.
And an increased ability to withstand intense heat.
My plants seemed to enjoy it.
It's not porous, but should leach small amounts of silica over time, as the pumice will too.
If it wasn't so heavy, I would use more.
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  #10  
Old 10-22-2019, 02:24 AM
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I should temp control the reservoir, I got that.
Do I aerate the reservoir also?
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