Which would produce more DO in a DWC?

JSB99

JSB99

Well-Known Member
Budley Doright said:
I have a hand held FLIR that I use for finding hot circuits and leaky ducts, prevented a couple of electrical fires. Probably helpful in a few of the grow rooms I’ve seen, some are a tad overloaded lol.
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No doubt. I get visions of a dozen Christmas light strands plugged into a single outlet! There are some pretty smart people here, but you know there are some, way on the other side of the spectrum, that are a spark away from burning their house down :lol:
 
mytwhyt

mytwhyt

Well-Known Member
C$,
This ones for you.. I figure this threads has gone so far OT, another jog to the left won't matter..
You'll find ton of good casting info on this site.. Here's Rasper's thread on diy high temp pyrometers...
http://www.alloyavenue.com/vb/showthread.php?9329-Getting-accurate-reads-from-a-pyrometer
This is the best diy metal casting forum on the net.. You'l find all skill levels, some are mastercraftsmen, in their metals of their choice..
Now about that DO, where did we wind up there? I think what was decided was, if a fish can thrive in it, so can a pot plant... Well that's good enough for me..
 
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Budley Doright

Budley Doright

Well-Known Member
mytwhyt said:
C$,
This ones for you.. I figure this threads has gone so far OT, another jog to the left won't matter..
You'll find ton of good casting info on this site.. Here's Rasper's thread on diy high temp pyrometers...
http://www.alloyavenue.com/vb/showthread.php?9329-Getting-accurate-reads-from-a-pyrometer
This is the best diy metal casting forum on the net.. You'l find all skill levels, some are mastercraftsmen, in their metals of their choice..
Now about that DO, where did we wind up there? I think what was decided was, if a fish can thrive in it, so can a pot plant... Well that's good enough for me..
Click to expand...
Even air breathing ones lol. Pretty sure that’s not the conclusion but may have missed that lol.
 
kingtitan

kingtitan

Well-Known Member
Budley Doright said:
Even air breathing ones lol. Pretty sure that’s not the conclusion but may have missed that lol.
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I cannot recall the thread or even if it was this forum but a guy did a complete test with a DO meter with every method (airstone,venturi, waterfall etc.) and it came out that the simple waterfall made the most DO.
 
JSB99

JSB99

Well-Known Member
kingtitan said:
I cannot recall the thread or even if it was this forum but a guy did a complete test with a DO meter with every method (airstone,venturi, waterfall etc.) and it came out that the simple waterfall made the most DO.
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@Cold$moke posted a copy of it in one of his threads. It concluded that there is a maximum amount of DO a plant can take in.

A simple waterfall isn't all that simple though. You have to make sure you have a powerful enough pump to get DO to the center of all the roots in your totes. Powerful pumps create heat problems with the water, so you have to get a handle on water temps, because you want the water between 66 and 68 degrees.

Using an air pump and stones allows you to get the same amount if DO to the roots, equally in every container. With a powerful enough pump, that is. These create heat as well. Downside is that you now have two pumps running.
 
JSB99

JSB99

Well-Known Member
JSB99 said:
@Cold$moke posted a copy of it in one of his threads. It concluded that there is a maximum amount of DO a plant can take in.

A simple waterfall isn't all that simple though. You have to make sure you have a powerful enough pump to get DO to the center of all the roots in your totes. Powerful pumps create heat problems with the water, so you have to get a handle on water temps, because you want the water between 66 and 68 degrees.

Using an air pump and stones allows you to get the same amount if DO to the roots, equally in every container. With a powerful enough pump, that is. These create heat as well. Downside is that you now have two pumps running.
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Forgot to mention that the plants take in less DO as temps rise.
 
Budley Doright

Budley Doright

Well-Known Member
kingtitan said:
I cannot recall the thread or even if it was this forum but a guy did a complete test with a DO meter with every method (airstone,venturi, waterfall etc.) and it came out that the simple waterfall made the most DO.
Click to expand...
Yes, I saw that. I got away from stones as I felt it was screwing up my ph
 
Budley Doright

Budley Doright

Well-Known Member
JSB99 said:
Forgot to mention that the plants take in less DO as temps rise.
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Well it’s more there is less to take in I think (lower temps hold more DO) as well as easier for bad shit to take hold. I have had zero issues with using only a water pump but the key to that is a chiller. My thinking is, to get the most out of a flooded system the water should be chilled.
 
Cold$moke

Cold$moke

Well-Known Member
JSB99 said:
@Cold$moke posted a copy of it in one of his threads. It concluded that there is a maximum amount of DO a plant can take in.

A simple waterfall isn't all that simple though. You have to make sure you have a powerful enough pump to get DO to the center of all the roots in your totes. Powerful pumps create heat problems with the water, so you have to get a handle on water temps, because you want the water between 66 and 68 degrees.

Using an air pump and stones allows you to get the same amount if DO to the roots, equally in every container. With a powerful enough pump, that is. These create heat as well. Downside is that you now have two pumps running.
Click to expand...
Ill dig around and find the post

Its not so much that the plant cannot take in excess DO

Its that water can only hold so much at a given temp
Like when you boil watet you see the oxegeb escaping in the bubbles that form before it boils :)
 
Budley Doright

Budley Doright

Well-Known Member
Cold$moke said:
Not quite the water can only hold so much DO
At any given temp. Close though :)

But the difference between 67 degrees and 75 degrees isnt enough for me to worry about :)
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It’s enough for me to worry about lol. My roots fall off if I run anything over 70ish for an extended time :(. Perhaps more air (re pump) would keep it in check but I refuse to run one, I had nothing but issues with them :(.
 
Cold$moke

Cold$moke

Well-Known Member
But the difference in DO @67 and @75 isnt enough for me to worry about

Most people have flow problems this causes the rot which gets blamed on many things.
And many things can cause the rot


I myself am doing a single plant with no light proofing and high water temps 76 ish
With hydrogaurd its doing fine

Next run im going to cut the hydrogaurd to see what the cut off is fir my setup and environment
:)
 
Cold$moke

Cold$moke

Well-Known Member
mytwhyt said:
C$,
This ones for you.. I figure this threads has gone so far OT, another jog to the left won't matter..
You'll find ton of good casting info on this site.. Here's Rasper's thread on diy high temp pyrometers...
http://www.alloyavenue.com/vb/showthread.php?9329-Getting-accurate-reads-from-a-pyrometer
This is the best diy metal casting forum on the net.. You'l find all skill levels, some are mastercraftsmen, in their metals of their choice..
Now about that DO, where did we wind up there? I think what was decided was, if a fish can thrive in it, so can a pot plant... Well that's good enough for me..
Click to expand...
Ha ha thanks bud

Im actually more into the metals for knives :)
Yes im a knife junky :oops:

Nothing looks like old japanese smelted steel unless you smelt it yourself lol

But i just dabble with it atm
 
Budley Doright

Budley Doright

Well-Known Member
Cold$moke said:
But the difference in DO @67 and @75 isnt enough for me to worry about

Most people have flow problems this causes the rot which gets blamed on many things.
And many things can cause the rot


I myself am doing a single plant with no light proofing and high water temps 76 ish
With hydrogaurd its doing fine

Next run im going to cut the hydrogaurd to see what the cut off is fir my setup and environment
:)
Click to expand...
I do love hydroguard and I’ve said a few times that it saved a run but without it I’m fucked and I can’t get it anymore, looking for a replacement but they all suck so far :(. That was what forced me to mechanically chill (cheap for me, refrigeration mechanic lol) and I gotta say it does keep things stable and no beanies. I do agree it’s not needed but IMO it does allow for a better grow when I keep res at 66-67. Also there is a fine line between enough and not enough DO :(.
 
Cold$moke

Cold$moke

Well-Known Member
Budley Doright said:
I do love hydroguard and I’ve said a few times that it saved a run but without it I’m fucked and I can’t get it anymore, looking for a replacement but they all suck so far :(. That was what forced me to mechanically chill (cheap for me, refrigeration mechanic lol) and I gotta say it does keep things stable and no beanies. I do agree it’s not needed but IMO it does allow for a better grow when I keep res at 66-67. Also there is a fine line between enough and not enough DO :(.
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Its not like i wouldnt rather my water stay at 68 i would but im not going to chill

When i get my new system running mabey ill have this figured out for ya :)
 
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