There's no silly questions here! Ask away... we all been there!
I have two Aquatek mini regulators for paintball. But unfortunately, Aquatek has been having supply issues lately and they're all sold out for the moment. They were an economical option and pretty good quality for the value, when they were about $85~90 shipped. When they were selling out, it went up to like $125+. I have no idea when they'll be restocked. You can always message them if you're interested.
I know for sure though that GLA makes quality equipment. However, their prices are higher but IMO the quality is there to justify that cost. Here's a good one...
Paintball CO2 Regulator | Green Leaf Aquariums
What's your budget anyways for co2 equipment?
Paintball is a good option, especially if you can get tanks and refills for cheap! The local paintball/airsoft store here offered 5 free refills if I bought the co2 cylinder from them. At $5 a refill, I basically got free tanks!
Basically, you need:
- Regulator w/ solenoid valve (solenoid valve is what allows you to put the co2 on a timer).
- Bubble counter (to dial in the bubbles per second = BPS)
- CO2 resistant tubing
- Check valve (this prevents water from siphoning out of the aquarium. Some bubble counters have this integrated).
- Diffuser (a ceramic diffuser would work just fine).
- Drop Checker w/ indicator solution (this is to give you a visual indication on whether or not you have too little, too much, or just enough co2 saturation in the water).
- Timer (I use a cheap analog timer)
- CO2 tanks (since you'll be getting paintball, I recommend two tanks so when one runs out, you have another on-hand)
Here's a basic setup diagram I found on the net... The PH controller is nice to have but its an unnecessary expense IMO that a cheap timer can do. This is all you really need. It's a lot easier than it sounds.
Let me know if you have any questions.
Edit:
I just visited the Aquatek website and they said the paintball regulator will be restocked next month. However, I don't know if they'll bring the price back down under $100. On their site, it's indicated to MSRP for $140.
http://aquatek-california.com/co2-regulator-solenoid/