If this is the mr Aqua 6 gallon long (2 feet wide 9 inches tall 5ish deep) then I have the same tank. I use the Tom Aquarium Rapids mini with the original piped switched out for 10 mm clear tubing and glass inflow and outflow. As for the heater, definitely run it on the outflow so like you said you dont get unnecessary buildup of organics. I have my co2 using a regular diffuser, but my buddy has one of the glass inline ones that he keeps on his outflow as well. I think the closer to the filter on the outflow side the better as it gives more time for the co2 bubbles to diffuse into the water. Just throwing out some of my own experiences to try to help.
That's the dimensions for the 6.5 gal. How is the Rapid's filter? I use to run 501's on my 2 gallon cubes, but realize they are very inefficient and will not really support a larger setup. Plus they clog quickly it seems and I'm not a fan of their hoses.
I have an Eheim Classic 2213. I've had it for 9 years and still works perfectly. I also am in the same boat about wanting to use an inline heater for a nano (Fluval 6g Edge). I also have concerns about a 200-watt heater running on it. People have said that a good failsafe is to have a heater controller, but that's adds to the investment. Man, I wish there was a nano inline heater!
As for CO2, I plan on using a diffuser vs inline. Inline heater plus inline diffuser would require a pretty complicated set-up for a nano.
Would there be any reason for me to go with a 2213 over a 2211 for a 6.5 gallon? I do get that inline devices will slow the flow, but will the inline heater and diffuser kill the flow too much on a 2211? I'm planning on going with the Hydor and a thermostat in the tank to be a failsafe. After raising reptiles I've come to be familiar with thermostats and how much they can save the day.
The freshwater+ is probably going to be strong enough for what you need. Always use a temperature controller. The $25 is the best insurance you can buy.
The freshwater + is a nice piece of hardware, but I like the configurations that I'm able to do with what I've seen with the plus PRO. I actually got out of planted aquariums right before the PRO was released and this is one of the reasons I want to get back in with nano's! Agreed with the controller 100%
Fauna wise I'd like to keep this setup packed when it comes to fauna. Yea, I know I need to be careful with the bio load and give the animals there space, but here is what I'm looking into:
- Cherry shrimp
- Thai Micro Crabs (Limnopilos naiyanetri)
- Danio margaritatus
- Boraras brigittae
- Pygmy Cory's (Corydoras pygmaeus)
That's about it. Might consider some nerites or ottos?
Anyone know the diameter of the 2211 and/or 2213 hosing? I'm trying to figure out what diameter inline heater and diffuser to get.