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Yeah... I have a mortal fear of things exploding and ruining my pretty face :-) Just did a bit of checking, and it look like it would cost me about $28 for decent precision pressure relief valve... Figure another $20-30 or so for fitting.... $30 for the tank... Anyway... Figure around $200 or...

Yeah, never trust a salesman :-) It's funny cuz' it was the pressure limit that ultimately made me put it back on the shelf a few days ago... The tank had a 97psi limit (I kid you not... 97 of all things) and I kind of wanted something that was okay with what the upper limit that I've seen from...

Seems like even the manufacturer doesn't have anything posted... Can't be that low though... Most of the acc tanks need to be charged at over 90 PSI... Which would still be enough... It just kind of odd though... Most company's have charts and graphs and all sorts of min and max numbers and they...

Advice is always welcome man :-) Looks good but I can't seem to find real specs anywhere... I'll look around a bit more but it sounds good... And I'm guessing it must be 12V, which would be cool... Can run everything but the lights of a car battery in case of an emergency... Very cool really...

Still goofing off with the pump setup. Got a small video below... They system is comming along well, but I'm not quite getting the pressure levels I was before... Perhaps to much flash inline with the water flow... I can't imagine it's really just the few extra feet of lift, but I'll be messing...

After hearing just how short a mist cycle you guys were running I started thinking DTW too... I'm glad to hear it's working out... I figure between the cycle time and low concentrations I'll be doing the same. Sadly I had a few setbacks as far as my grow room size is concerned :wall:, but I'll...

Good info man, thanks... I guess the large PH swing is due to the lower concentration of nutrients? Or is that just how these kinds of areo systems go? Not that I see it as a bad thing, IMHO you need a moving window like that for optimal absorption of all your elements... I'm just surprised to...

I wish I could pick one up that inexpensively... I would like to play around with one... But this design was intended to operate without one... No really good reason for that, other then trying something different... I certainly can't cite cost at this point :-P But the pump was only $45, and...

Oh... Thats cool... Thanks for the shot of the chillers guts man. Been a pleasure reading through your thread :-) T.M.H.

Okay... I think I follow now... Since I'm not sure of the dimensions of the area you are trying to cool I can't speak to efficiency... But it's something to consider... Certanly a 3/4 HP chiller is quite significant though. You will however want to consider what your trying to achieve... If...

My magical power to make any hobby expensive :-) Care to share? I'm thinking something like a car antenna eh? Don't forget it's a dynamic system though, more volume, more mist... I think I might rather try and fix as many variables as I can... Although if you went with a dynamic misting...

Okay... Now I'm just getting confused... You growing weed or brewing beer? Or both? If you really are chilling wort at the same time then it's not going to work out for you... As that's going t.... Yeah... That just makes no sense. Incase I'm misleading you here... Wort is unfermented...

Just referenced that as an example on the construction process... However the mobility of the copper ions depends on the Ph of the solution... Increasing as the Ph drops. Some light reading is here: http://library.wrds.uwyo.edu/wrp/95-07/95-07.pdf As for toxicity I'm not really inclined to...

Okay so I just did a bit of checking... And the price of raw tube is not that much less then what they want for the pre-formed coil..... Only around $10-15... Most definitely not worth the trouble... Although do tell us a bit more about your application... I'm assuming you plan on hooking this...

For sure... It's about as inert as you can get... At least with the kind of chemicals we are running. Only downside is that the heat conduction is much poorer... At a minimum I would suggest pulling the coils apart a bit. Although honestly something like that is no so difficult to make. There...

Wow... I'm glad I asked... I probably would have shot right past .5... What kind of Ph range do you try and maintain? I've got friends that swear by GH... It's what I used the first few times too... Honestly I'm only going with the canna for the myzocondrial inoculation... And I figure I might...

Yeah... I had always meant to add a go-kart disk break... But the controller has regenerative breaking and ends up being able to stop the thing just fine... I can go down a 15 degree slope at any speed I want from fractions of a MPH on up... Sadly the turning radius is what ended up making it...

:-) Not crazy enough for that one... Calculated top speed of about 38Mph... I took it up to about 25... Speed wobble starts to get the better of me around there... Turns much better in reverse too :-P T.M.H.

The pipe run is around 8' long... I was kind of thinking of feeding from both ends... Obviously there is still likely to be some trapped air... But I have a feeling this would considerably minimize it... And I have SO much excess capacity on the manifolds right now... Hell... I guess the best...

That would be one hell of a long belt man :-) I'm not saying that it wouldn't work, but I think you might be better off with a cable drive or one of those helical drive chains... You would need tensioners of some sort as well... I made an electric skateboard for burning man a few years back...