Register ICMag Forum Menu Features Search Today's Posts Mark Forums Read
You are viewing our:
in:
Forums > Marijuana Growing > Indoor Grows - Hydro > Freezing nutrient solution

Thread Title Search
Click for great deals at MB Ferts
Post Reply
Freezing nutrient solution Thread Tools Search this Thread
Old 07-27-2018, 06:30 PM #51
bobert
Member

Join Date: Mar 2015
Posts: 95
bobert will become famous soon enoughbobert will become famous soon enoughbobert will become famous soon enough
That's some really good info Home-Grown! For some reason that first link won't load, I get what you're saying though. I've never seen one of those TEC or Peltier devices until now so it's definitely got me intrigued.

On YouTube, someone mounted one with a series of heat sinks and fans into a cooler. If I can find a mini radiator to fit inside that cooler, I could plumb in this baby 40 g/ph water pump leftover from last run.

Tinkering is my thing. I've rebuilt video game systems that had heat sinks and fans. Had to use thermal paste and all that. It all sounds similar!

Thanks!

To finish my ice cube experiment.

Gh micro/bloom is clear also! It melted and mixed fine from what I see.

I read they added molasses on the Humboldt labels, I think that might be why it separated and had floating stuff in it.
__________________
Call me Bob or Bert I don't care, it's a fake name anyway
bobert is offline Quote


Old 08-07-2018, 03:35 AM #52
Home-Grown
Member

Home-Grown's Avatar

Join Date: Jul 2018
Posts: 116
Home-Grown will become famous soon enoughHome-Grown will become famous soon enough
Quote:
Originally Posted by bobert View Post

Tinkering is my thing. I've rebuilt video game systems that had heat sinks and fans. Had to use thermal paste and all that. It all sounds similar!

.

Just keep in mind, this is not easy or surgested.
I have been designing my own equipment for decades.


If you can get suitable results with tests, consider sourcing Thermaly Conductive Graphite Sheet to replace thermal paste.


Comes in thickness of around .02 - .04mm with thermal conductivity better then the copper or Aluminium.
Very thin sheet can be hard to work with, and over kill.

This material is used in devices like phones to heat conduction and shielding.


All the best

Home-Grown is offline Quote


1 members found this post helpful.
Old 08-07-2018, 03:40 AM #53
Home-Grown
Member

Home-Grown's Avatar

Join Date: Jul 2018
Posts: 116
Home-Grown will become famous soon enoughHome-Grown will become famous soon enough
Synthetic Graphite sheet

https://www.kingbali.com/Product419/
Home-Grown is offline Quote


1 members found this post helpful.
Old 08-09-2018, 05:45 PM #54
Home-Grown
Member

Home-Grown's Avatar

Join Date: Jul 2018
Posts: 116
Home-Grown will become famous soon enoughHome-Grown will become famous soon enough
Quote:
Originally Posted by MrBungle View Post
Are you talking about the Peltier devices Home-Grown?

Yes, Peltier – ThermoElectric Cooler (TEC).
2x TEC1-12706 in parallel at 12v will draw about 108W.
With very good water cooling or heatpipe of surface area covering both plates fully (=>40x80mm).



It is possible to maintain 25Ltr at 25C in 27C ambient environment.
I have archived better results with improved design, but just to keep folks realistic. After 30C you’re pushing more hot air around the res then removing it.

Fans on Aluminium Heat Sinks are not really going to cut it, the single devices on Heatpipe are very inefficient and generate a lot more heat, pumping this heat into confined environment could make it worse.

Again, everyone is going to have different variables.
Using air extraction, “pipes with radiator” or “separating the hot and cold side of Peltier with in wall design”.

I mention this for the people, who like experimenting.
Readers: If any of this is new, I would not suggest you Google and buy any pre-built device.
Sometimes it’s just about the challenge.
Home-Grown is offline Quote


2 members found this post helpful.
Old 08-17-2018, 05:12 PM #55
bobert
Member

Join Date: Mar 2015
Posts: 95
bobert will become famous soon enoughbobert will become famous soon enoughbobert will become famous soon enough
I appreciate you sharing that home-grown. I'll definitely post back if I build something worthy of sharing too.

Now that the scrog screen is completely filled in. There's tons of shade under the canopy. Res temps are getting down to 68f by morning. Up to 71 during the day. If it goes to 68f at least once every 24hrs, I can't see them getting root rot IMO.

But, I haven't been able to look at the roots for 3wks since it's scrog. So who knows.

Thanks again everyone!
__________________
Call me Bob or Bert I don't care, it's a fake name anyway
bobert is offline Quote


Old 08-17-2018, 06:51 PM #56
Home-Grown
Member

Home-Grown's Avatar

Join Date: Jul 2018
Posts: 116
Home-Grown will become famous soon enoughHome-Grown will become famous soon enough
Quote:
Originally Posted by bobert View Post
I appreciate you sharing that home-grown. I'll definitely post back if I build something worthy of sharing too.

Now that the scrog screen is completely filled in. There's tons of shade under the canopy. Res temps are getting down to 68f by morning. Up to 71 during the day. If it goes to 68f at least once every 24hrs, I can't see them getting root rot IMO.

But, I haven't been able to look at the roots for 3wks since it's scrog. So who knows.

Thanks again everyone!

I have lost plants in days when res is hitting 30c for more then a 4-5hrs.
They just don't bounce back after cooking/discolour.
25-27 is good for growth, but look for lower "lights out temps" if you can.

Thats my 2Bob
__________________
Not doing pictures, live with it.
Home-Grown is offline Quote


1 members found this post helpful.

Post Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT +2. The time now is 03:40 PM.




This site is for educational and entertainment purposes only.
You must be of legal age to view ICmag and participate here.
All postings are the responsibility of their authors.
Powered by: vBulletin Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.