Rony1107

I have a 60 litres net aquarium with rare plants n mosses.
I use seachem fertilizers as per seachem chart have 1 watt/litre.

Meanwhile I'm using CO2 DIY Yeast but as I can see its not sufficient.
I have trouble growing glosso due to lack of CO2.
I am planning to buy a used Eheim co2 system this weekend and need help/advice in deciding which PH controller should I buy.
Attached pls find link to my planted aquarium.

https://picasaweb.google.com/1132292...eat=directlink
I am thinking of buying one out of these two PH Controllers t be attached to the Eheim CO2 system

http://www.ebay.com/itm/WEIPRO-PH-20...11550763432814
OR
http://www.ebay.com/itm/250677554002...=p5197.c0.m619

If any hobbyist has used either of these PH Controllers pls mention the pro's con's of these PH Controllers.

Thnx in advance

wwh2694

Hello i had a ph controler before and had to sell it coz its not needed. It will make your tank low on co2 coz the ph will drip on a low side specially if you got a driftwood and will not give any co2. A planted tank needs consistent co2 truout your lighting hrs so no need for that imo. Good luck

Rony1107

Thnx for your reply. Frankly the hobbyist who's selling me his CO2 system said the same. He said he'll explain exactly how many bubbles and how to calculate so that my PH remains stable. No I do not have driftwood in my aquarium nor substrate that lowers PH.

Left C

One way to set it is to turn off the CO2. Install the probe and let it run a day or two. This will let you know what the pH of your aquarium is with only atmospheric CO2 added. Let's call this the "static" pH.

Now, adjust the knob on your pH controller so that it is 1 pH point than what its normal pH is. This will give you approximately 30 ppm. As an example, let's say that your "static" pH is 7.4. Turn the adjustment knob to 6.4. When enough CO2 is added to lower the pH to 6.4; you will have approximately 30 ppm of CO2.

Run your system with a timer for the solenoid. You can have the solenoid turn on for 15 minutes to one hour before the lights turn on and it shuts off about an hours before the lights turn off. This allows the pH meter to be read 24/7 and it is only adding CO2 when the plants need it.

As to which one of the pH controllers to get, neither of those. One has a 30 day warranty and the other has a 2 week warranty. You need one with a year or two warranty!