Milwaukee Regulator fluctuations - Equipment - Aquatic Plant Central

Go Back   Aquatic Plant Central > General Interest Forums > Equipment

Equipment Aquarium Equipment - Discuss equipment to help setup your planted aquarium.

Reply
 
LinkBack Thread Tools Display Modes
Old 07-11-2007, 09:34 PM   #1 (permalink)
 
Join Date: Aug 2005
Posts: 4
iTrader Ratings: 0
paulooin is a regular member
Default Milwaukee Regulator fluctuations

Hi all,

This is my first time posting, so forgive me if I make any social faux pas. I also posted this to the discus forum (but I figured you guys would know this stuff best).

I have a planted discus tank with CO2 injection. The CO2 regulator solenoid is hooked to a timer so it's on only in the daytime. Recently, my CO2 regulator has decided to free-flow. *Again* (happened once before). Unfortunately, this time it happened when I was out of town and when I returned, pH was around 5 and all my discus were dead.

After some experimentation, I discovered that the regulator seems to allow more air when the room temperature is *low*. This is the opposite of what I would expect if it were due to CO2 expansion in the tank. My guess is that the metal parts of the regulator are expanding/contracting with temperature swings of the room. The room is a south-west corner room so it goes from ~70-78 on a daily basis with occasional swings from 63-80+, if the weather is right (Bay Area summers). I must have set the regulator last on a hot day, so when the temp dropped, the regulator free-flowed.

I contacted the company (Milwaukee) but they haven't gotten back to me yet.

-Has anyone else have had this experience?
-Any ideas?
-Is a pH controller my only solution to this problem?
-Any recommendations to good reliable pH controllers?

Thanks for any and all advice!

Paul

Last edited by paulooin; 07-11-2007 at 09:36 PM.. Reason: Ooops, fix typos
paulooin is offline   Reply With Quote

Advertisement [Remove Advertisement]
Old 07-12-2007, 06:09 AM   #2 (permalink)
 
Join Date: Jun 2007
Posts: 87
iTrader Ratings: 0
mhoy is a regular member
Default Re: Milwaukee Regulator fluctuations

Do you have a needle valve after the solenoid?
mhoy is offline   Reply With Quote
Old 07-12-2007, 07:59 AM   #3 (permalink)
 
Join Date: Aug 2005
Posts: 4
iTrader Ratings: 0
paulooin is a regular member
Default Re: Milwaukee Regulator fluctuations

mhoy:

Thanks for the response. Yes I have a needle valve after the solenoid. I set up the regulator per their instructions: Tank off-->turn regulator knob left-->fully open needle valve-->open tank-->adjust bubble rate with only regulator knob. I used the needle valve only for a super-fine tuning.

-paulooin
paulooin is offline   Reply With Quote
 
Old 07-12-2007, 08:33 AM   #4 (permalink)
 
Join Date: Jun 2007
Posts: 87
iTrader Ratings: 0
mhoy is a regular member
Default Re: Milwaukee Regulator fluctuations

You might want to mention the type of regulator, needle valve, etc. (Pictures are handy). How is the CO2 dispersed in the tank.

Your setup doesn't sound quite right. From what I've read, adjust the output of the main regulator to 15 lbs output pressure. Then fine tune this with the needle valve.

Here are the instructions from Rex Grigg a forum member (and supplier of fine products). I've corrected my post on the amount of pressure to set the output at.
http://www.rexgrigg.com/regset.html

Last edited by mhoy; 07-12-2007 at 08:39 AM..
mhoy is offline   Reply With Quote
Old 07-12-2007, 02:17 PM   #5 (permalink)
Senior Member
 
Kelley's Avatar
 
Join Date: Aug 2006
Location: Coralville, Iowa
Posts: 658
iTrader Ratings: 13
iTrader Positive Rating: 100%
Kelley is a regular member
Default Re: Milwaukee Regulator fluctuations

I could never get a consistent bubble rate with my milwaukee regulator. I ended up buying a Fabco NV55 needle valve from Rex and putting it in-line. Now my problems are over! The fabco is rock solid and offers great control. Here is the thread with all sordid details.

https://www.aquaticplantcentral.com/f...egulator-woes-


Good luck!
Kelley is offline   Reply With Quote
Old 07-12-2007, 02:50 PM   #6 (permalink)
Moderator
 
hoppycalif's Avatar
 
Join Date: Apr 2005
Location: Brentwood, CA, USA
Posts: 7,203
iTrader Ratings: 22
iTrader Positive Rating: 100%
hoppycalif is a valuable member of the community hoppycalif is a valuable member of the community hoppycalif is a valuable member of the community
Default Re: Milwaukee Regulator fluctuations

If you use any reasonably good needle valve, including the one on the Milwaukee regulator, correctly you don't get free flow anytime. You need to set the regulator output pressure to 20-30 psi. Then adjust the needle valve to get the bubble rate you want. If you do this with the CO2 tank very cold, right after filling it, you need to readjust the regulator several times before the output pressure will remain the same. Then, if you let the CO2 bottle completely empty, you do get a higher output pressure for the last bit of CO2, and that can cause too high a bubble rate during that time. If you refill the bottle as soon as the bottle pressure starts to drop, you don't have that problem.
hoppycalif is offline   Reply With Quote
Old 07-16-2007, 10:21 PM   #7 (permalink)
 
Join Date: Aug 2005
Posts: 4
iTrader Ratings: 0
paulooin is a regular member
Default Re: Milwaukee Regulator fluctuations

Thanks all for the advice. Although the instructions that came with the regulator say otherwise, I'm following mhoy's advice and adjusting the needle valve and regulator knob so the low pressure dial reads a few pounds (not quite the 15 that he recommends, but oh well).

The weather hasn't yet allowed me to say for sure, but the bubble rate hasn't changed from am (cool) to pm (warm).

Additionally, I've spent yet more money and bought a Pinpoint pH controller.

-paulooin
paulooin is offline   Reply With Quote
Old 07-17-2007, 06:55 AM   #8 (permalink)
Moderator
 
hoppycalif's Avatar
 
Join Date: Apr 2005
Location: Brentwood, CA, USA
Posts: 7,203
iTrader Ratings: 22
iTrader Positive Rating: 100%
hoppycalif is a valuable member of the community hoppycalif is a valuable member of the community hoppycalif is a valuable member of the community
Default Re: Milwaukee Regulator fluctuations

The pH controller is not helpful, in my opinion. Far better to get a drop checker and use it to determine the amount of CO2 in the water. Once you find the bubble rate that holds the amount of CO2 in the water to about 30 ppm, and it stays there every day, then you just monitor the bubble rate occasionally, plus watching the drop checker. The pH controller doesn't do any of that for you.
hoppycalif is offline   Reply With Quote
Reply


Aquatic Plant Central > General Interest Forums > Equipment > Milwaukee Regulator fluctuations

Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 08:10 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

Search Engine Friendly URLs by vBSEO 3.6.1