Ok so most of you know I plan to get a 12 gallon eclipse with sand substrate, live plants including 4-6 marimo balls and some other true aquatic plants, a 50 watt marineland stealth pro heater, 3 small albino Cory catfish, and a existing female betta I already own. My question is should I get a air pump. They're on sale at bigals plus I have a 10 percent off coupon and free shipping. So I plan to buy everything at once on bigals. So I was looking at the tetra whisper. Is it just quiet on the outside and produces strong currents, Water vibrations, etc. I do not at all mind a loud air pump I fact I have one thats loud and i find it soothing at night. Is it quiet to the fish too or is it just quiet on the outside? I want one that's silent on the inside. I don't care if it sounds like a train going by on the outside or if it sounds so silent you couldn't tell it's there as long as it's queit and doesn't disturb the fish on the inside. I want calm waters also because I'm going to have sand as I mentioned so I don't want it blowing the sand into the filter or digging up the plant roots. I don't mind if it kindle stirs it as that prevents aerobic pockets as long as it's not spraying the sand in the filter. And when I look at pictures it just has a tube? So do you just put the airline in the water or does it include like a I don't know what it's called I have it in my tank it's like a tower with a opening on the top that shoots out bubbles. Are there any down sides to the pump? Will it take away co2 from plants? Do plants even need c02? I'm not going to buy a co2 producer or anything. Are there any better pumps out there from bigals? Should I get the 10 or 20. I was thinking 10 so it's quieter and I don't need that much air at least I don't think. Thanks here's the link! Tetra Whisper 10 Air Pump - Air Equipment - Air Pumps at BigalsOnline. Or would something like a bubble wand or decoration that aerated better?