pH controlers

  • We are currently upgrading MFK. thanks! -neo
CO2 injection causes your water's pH to drop. Say your water is normally has a pH of 7.5. If you set the controller to 6.0, it'll inject CO2 until your tank's pH reaches 6.0, and then turn off. From that point on, it'll turn on/off as necessary to keep the pH at 6.0 (or whatever you choose to set it to).
 
But doesn't the pH of the water depend on other factors as well? Like bogwood, etc.

Also, from what is stated above, the point of it is to keep it at a constant?

How does having a pH controller compare to just having a solenoid?
 
ph controller and solenoid are two different things. the solenoid is required no matter what, this is what stops or starts the flow of co2. the controller only sends a signal to turn the solenoid off/on. in my opinion, a ph controller is worthless. you dont need to spend the money on it. get a timer for your lights and solenoid and youll be good.
 
Yup, solenoid and timers was the original plan. Just wondering what is the point of this expensive gadget.
 
personaly i would only do a ph controler if you were going to spend the extra money and get a pinpoint controler. the pinpoint has one outlet for your CO2 (lowers PH) and a second one for an airstone (if PH gets to low) this allows you to not need a timer attached to your ph controler and will keep the correct amount of co2 in the tank 24/7. unlike with other units you still need a timer and need to turn the ph controler on before your lights so you can have co2 in your tank once lights come on.

so IMO if you dont want to buy the pinpoint then a PH controler is pointless.....well not pointless but not worth the money
 
jcardona1;2880581;2880581 said:
ph controller and solenoid are two different things. the solenoid is required no matter what, this is what stops or starts the flow of co2. the controller only sends a signal to turn the solenoid off/on. in my opinion, a ph controller is worthless. you dont need to spend the money on it. get a timer for your lights and solenoid and youll be good.
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When you experience a CO2 dump, the purpose of a pH controller will become clear to you.
 
t0p_sh0tta;2880782;2880782 said:
There isn't one really. If you really wanted to, you could even go without a solenoid.
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Not exactly. A pH controller can prevent a co2 dump. These are not too uncommon, and can and will wipe out your tanks occupants.
 
pk705;2880629;2880629 said:
Yup, solenoid and timers was the original plan. Just wondering what is the point of this expensive gadget.
Click to expand...
When you setup co2, there is always the chance of a co2 dump. This can happen for a number of reasons. The most common reason being your cylinder is nearly empty. The lower pressure causes the regulator to allow more co2 to pass for a short time. This short time can be only a few minutes, but when your bps goes from 2 to 20, the co2 levels can escalate quickly. This forces your pH down at a very rapid rate, which can kill your fish. A pH controller will prevent the pH from going too low.
 
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