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#16
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I see you gave this some effort. I do like the Eheim regulator, I would
not buy the pH controller from Eheim. I have used a Azoo controller and that is a long story too. Actually I use two of them. One is on a calcium reactor for a reef tank. I have very steady co2 bubbling. I have used a M3 dual stage with a solenoid and Dwyer needle valve. It did work but was a pain to get very steady. The real problem is that high pressure / low volume systems are hard to regulate with precision altogether, even with lab grade equipment. To overcome this problem I used a brass check valve with 20+ psi cracking pressure is used. So what gets through the check valve is controlled by the needle valve assembly to the check valve. Probably only 1-3 psi difference and still has enough force to drive diffuser on exit. When using a dual stage to a needle valve adjustment, the back pressure after the needle valve will be almost non-existant. So for example running a second stage at a lower level is necessary to get a fine adjustment out of the needle. It can work but I am tired of trying. Hope this is of some use to you! I really cant provide info on the needle valve. There is currently on for sale on ebay though.... : |
#17
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I think your unit was broken or I have a newer or different model than
you have. |
#18
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"Drew_Y" wrote in message
oups.com... I think your unit was broken or I have a newer or different model than you have. No, what I got was definitely not broken. Those flaws are there by design, not by mistake. And Eheim haven't changed their CO2 system since it was first released. Cheers, Michi. -- Michi Henning Ph: +61 4 1118-2700 ZeroC, Inc. http://www.zeroc.com |
#19
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http://www.advancedaquarist.com/issu...02/gallery.htm
Heres a description of a flow valve you had interest in. http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MESE:IT Here is a cheap used one if you want it. |
#20
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I have the regulator with medical 1.5 mm tubing adapter, check valve,
and fritted diffuser. I used a nylon 1.5 to 4mm barb adapter and brass check valve. I only had to make one adjustment after the first week as the bubbling slowed down. I have found the regulator very reliable. I bought it based on a recommendation. I have an aqua medic solenoid run by an Azoo pH controller. Controller is chinese with poor instruction for calibration. Once it is calibrated though it does work well. Cleaning a fritted disk is easy. A dip in a strong oxidizer such as sodium chlorate, 35% peroxide for several hours followed by a strong water rinse, then a weak acetic acid rinse will make it like new. What a pain right?? ha... Anyway sorry it was so difficult. Look at this new item available in now in North America. Looks very nice!! It might work but 280 http://www.aquariumdesigngroup.com/i...r&wrap=ShopADG |
#21
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"Drew_Y" wrote in message
oups.com... Anyway sorry it was so difficult. Look at this new item available in now in North America. Looks very nice!! It might work but 280 http://www.aquariumdesigngroup.com/i...r&wrap=ShopADG Very cool looking. Nice. But $280.00 for a regulator? I think not. Of course, there are people who are willing to pay $120 for a $10 polo shirt if the shirt has a little crocodile on it... To each their own... Michi. -- Michi Henning Ph: +61 4 1118-2700 ZeroC, Inc. http://www.zeroc.com |
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