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I appreciate that its not the ph that kills but the level of CO2 but although not directly linked there is a correlation between the two. The other point is that my ph does not drop below 6.33 with a kh of 2 so that my co2 levels could not get into the dangerous range.

The PH drop will turn the gas off so I dont understand your point.

I agree. As I have been saying all along I basically leave my bubble rate at the original level and therefore the integral solenoid rairly stops the flow but if I make any changes and I am going to be away for a few days I know that when I come back my fish will be safe. If I did not have the...

I also use a timer as I would without the computer therefore the solenoid is closed 1 hour efore light out and opened 1 hour before lights on. As a cross check I also use a BC and remains lime green. Therefore the computer keeps the levels in the correct range without the worry that I could...

Dispite what was said in the in the thread provided to you, I have subsequently found that it works very well for me and the results speak for them selves especially at TGM but everyone is entitled to their opinion. As to your problem if the calculated optimum PH is 6.97 by default it will not...

Hi All The computer has now been installed for 2 and a half weeks. First observation / benefit is that prior to installing I was making daily tweeks to my needle valve to keep the CO2 injection in the 'sweet spot' without gasing the fish. Now I input the tank water dkh to the computer and it...

When you open the main bottle valve in an anti clockwise direction the gauges should rotate to around 50psi and 1.5bar. If you are not getting a reading it suggests that either the bottle is empty or gas is not reaching the regulator. If you remove the regulator and very slowley open the bottle...

What is the bottle pressure of a disposable? I have not used disposables however I tried to use a solenoid with a single gauge regulator on a refillable. The sound of exploding CO2 piping nearly took my ears out :shock: I understand that the problem with low end regulators is they do not...

On mine they are flush.

If it is of any consequence I am now doing my water change and I have got close to the bottle and measured accuratly. It is 17.25" 44cm including the stand and cage on the top, which could possibly be removed to give an extra 1/4" less. Hope that helps.

I have a 500g JBL it is 18" high including the stand.

Thankyou for your input Dusko and your diplomatic way of putting things. Please dont think that I disagree with the advice provided. It is the way in which it is provided. Nowhere did I suggest that I had a problem, although I agree that nothing is perfect but I dont want to fix what isn't...

What I was refering to was that you are all to quick to make recommendations without finding out the facts. I already have a solenoid valve and a timer and for that matter MH lighting that someone else suggested I should upgrade. I dont have any problems with my tank, algae or otherwise. I just...

Actually thanks very much but you dont know what I already have etc. I am glad to say that reefers have more respect and take the time to find out. And what if TGM 'chime in' as you so nicely put it. Maybe in future I will not bother with this forum if that is the sort of response someone gets.

Aleady sorted the lighting and filtration as I realise how important it is in my reef.

Strangely enough that is where I saw it in use. I appreciate that you can get excellent results with the most basic of kit but where my time at home can be irratic I have found that automation with my reef was the way to go and I am expecting to mirror this with my planted tank. The chemistry...

Looks like I am getting one of these for Christmas to add to my JBL CO2 system. Has anyone any experience with these? I am also a reefer and use a Calcium reactor with a PH controller. Therefore I have similar experience with marines but the CO2/PH computer looks to be much more comprehensive.