Aussie Growers Thread

reza92

reza92

Well-Known Member
OzyM8 said:
Yeah but Nah :lol:. I totally get what your saying, and for most they would have to add water to the res and quickly that would bring the EC down. I don’t advocate adding nutes to a recirculating system ,as it just screws the nute balance, and you start running into other issues.
If you’re indoors hydro then to me the goal is to have your environment controlled, and every aspect of your grow dailed in. If you run a really tightly controlled VPD then you don’t have to add anything, including h2o. Just adjust ph for the first couple of days and then off you go. I get 12-14 days out of a 220 litre res on a 4x4 table.
What dictates a res change is when the ph falls out of range 5.5-6.5, or the level in the res gets too low to pump a feed.
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so what happens at the 7-12 day mark when the ec has hit the floor. The idea of a resirc system is the res remains as constant as possible the whole res cycle.

If it works it works but towards the end of each res cycle your starting to invite issues imo. There’s a reason guys running huge resirc systems are spending big money on fancy dosing systems to keep the res at the ph/ec/water levels they require.

not to mention if your using a product like silica which will effect ph as the plant uptakes it
 
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beernutz

Well-Known Member
reza92 said:
personally I’d add more products. But that’s because if I’m using soil I like it to be as complex as possible for the microbes to have an easier time breaking it down.
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I do now rez
But also when he using richgro seasol pro mix there's no need to add to much to it

Its hands down the best soil ready tho grow u can use that comes in a 25 litre bag
Ive trialled using this soil and nothing else added in a 50 litre fabric pot....
Stake me rep as an.outdoor grower on this soil for anyone who wants to use it
 
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beernutz

Well-Known Member
Better get.of my arse n grab a coffee go check.the greenhouse
Yesterday is a blur of drinking n smoking never went out there
 
OzyM8

OzyM8

Well-Known Member
reza92 said:
so what happens at the 7-12 day mark when the ec has hit the floor. The idea of a resirc system is the res remains as constant as possible the whole res cycle.

If it works it works but towards the end of each res cycle your starting to invite issues imo. There’s a reason guys running huge resirc systems are spending big money on fancy dosing systems to keep the res at the ph/ec/water levels they require.

not to mention if your using a product like silica which will effect ph as the plant uptakes it
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When running a really tight VPD the ec doesn’t hit the floor, or rise. You don’t add h2o along the way. The res does stay quite constant. I use Canna Aqua and it’s formulated for exactly this type of system. It has silica in it so you don’t have to add silica, canna Aust actually say not to add it.

This is what I mean when I said in the other post that there’s a heap of misinformation, and guys not doing it right out there.

I can understand why some guys doing recirculating systems at scale would be using dosing systems for ec and ph, and then that would depend on what method they use, and substrate / media they’re using.

There’s swings and roundabouts for every method, and they each have their pros and cons
 
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kwigybo88

kwigybo88

Well-Known Member
Dtw
JimyTheCook said:
The more i read about RDWC the more i like the idea although noise from air pumps and a decent sized water pump would become an issue not to mention getting the money together for it all as theres allot more involved then just getting some good lights an banging seeds into some soil mix. Either soil or soilless medium i would run a res on dtw setup an only need a smaller air pump to oxygenate the reservoir tank. All that said though still would be alright to give RDWC a crack.
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Do coco dtw mate. Its much easier than rdwc, its more forgiving, has fewer pieces of equipment, plumbing and fittings, more tolerant of root zone temps and so on. And the yield is very comparable to dwc, if not on parity.

20% runoff is massive overkill. You only need that if youre letting the medium dry out which is detrimental in coco anyway. Feed 4-6 times a day and you literally dont need runoff at all. Maybe a few drops if youre new to coco.

Poly tubing, small water pump, few fittings, rez. You dont need an air pump at all; it fucks with your ph. Done.
 
2easy

2easy

Well-Known Member
Drip feed on top.
The roots grow through down into an undercurrent system underneath. No airstones. I used a pond fountain in my control bucket for aeration.

It was wicked. Had a tap on the recirc line so i could switch it from recirc and it would pump the waste water out into a bucket for res changes.
 
reza92

reza92

Well-Known Member
kwigybo88 said:
Dtw

Do coco dtw mate. Its much easier than rdwc, its more forgiving, has fewer pieces of equipment, plumbing and fittings, more tolerant of root zone temps and so on. And the yield is very comparable to dwc, if not on parity.

20% runoff is massive overkill. You only need that if youre letting the medium dry out which is detrimental in coco anyway. Feed 4-6 times a day and you literally dont need runoff at all. Maybe a few drops if youre new to coco.

Poly tubing, small water pump, few fittings, rez. You dont need an air pump at all; it fucks with your ph. Done.
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I run 20% because I just pump salts hard and don’t want a buildup. I agree it’s overkill for most people. I’d recommend a decent runoff every 1-2 weeks but just to be on the safe side.
 
Calbrowno

Calbrowno

Well-Known Member
Can someone explain where exactly the waste runs to in run to waste systems? Or does it just collect in a tray which needs emptying etc
 
JimyTheCook

JimyTheCook

Well-Known Member
Great input from everyone cheers. Power outages on a RDWC would certainly fuk things up abit an something i hadn considered much any sugestions on ways around that apart from a generator?. @OzyM8 Your setup sounds good an keepin the coco soaked with 4 or 5 feeds a day would be more forgiving if pwr outtage occured but if your getting little to fuk all runoff there wldn be much need to have it on a recirculatin system though? theres just something about RDWC thats grabs me
 
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