|01-01-2013 07:16 PM|
|ADJAquariums||Alright, the final moments before i order an Ehiem 2217, any last minute advice? i hear that you can get anaerobic bacteria in them, but my tank has good O2 levels so i dont believe i will encounter that issue.|
|12-02-2012 10:31 PM|
|12-02-2012 04:13 PM|
It's also important to know that Eheim's are generally the last filters mentioned here that require replacement parts.
|12-02-2012 04:05 PM|
A 2217 would not suffice for a 40g only if you are injecting CO2 and ferting regularly into the water column.
Otherwise, a 2217 is enough.
Instead of talking about flow, it's more prudent to understand why you need flow in the first place. It's not universally necessary or even preferable.
If you do need the high low, you don't need to get two 2217s. You can get a 2217 and a power head to increase flow. It's more mechanical clutter in your tank but much more affordable and less to maintain.
Also, there's no problem with turning your filter off and cleaning it. If your tank is established and not critically stocked, you'll be fine.
Two 2217-sized filters is a luxury on a 40G lol.
|12-02-2012 12:46 PM|
Running two filters is great, you can alternate maintenance on the filters.
I have 2x 2217's on my 75P. I also have a 1600gph circulation pump in my tank as well.
|12-02-2012 05:01 AM|
|somewhatshocked||My vote is for keeping the HOB with whatever canister(s) you add. Always great to over filter in my book and gives you greater flexibility.|
|12-02-2012 12:33 AM|
|ADJAquariums||ok, i dont have the money to run 2 2217's, should i go one and keep the 40 gal rated HOB?|
|12-01-2012 06:01 PM|
I have a 2217 and a 2026 on my 120p, I broke my QD the 2026 and it was down for a week or so. The 2217 handled the tank just fine, I almost considered just getting a PW just for the co2 but I found a sale for the QD that I couldn't pass up.
IMO you will be fine with the 2217 for the time being, if you find you need more flow down the line just add a PW or go with another can if you can afford it.
|12-01-2012 05:00 PM|
|12-01-2012 04:10 PM|
I'd go with a larger Eheim. Or even two 2217s.
When it comes to tanks larger than 20gal, I prefer to run multiple filters. Either HOBs or canisters. Allows flexibility if one fails and needs repair or if I have to do a major clean.
|12-01-2012 04:00 PM|
|11-30-2012 01:41 PM|
Because it doesn't provide solid flow all around the tank. Using lily pipes? Tiny amount of flow. Using a custom spray bar can help but there are still a ton of dead spots and circulation pumps are necessary.
My general rule of thumb: 2211 for 5gal or less, 2213 on nothing larger than 10gal, 2215 on 12-15, 2217 on 20-25.
I find the 2217 is perfect for a 20long. Seems to be consistent with what a lot of Planted Tank folks use.
|11-30-2012 03:04 AM|
fluval over eheim anyday.
want something cheap that still do the job? go with a sunsun.
eheim replacement part cost as much as just buying a new filter.
|11-30-2012 02:51 AM|
|Calmia22||I have a aquatop cf500 w/uv on my 40b. I have a congo puffer who is very messy, and it without a doubt gets the job done and doesn't overdo it on flow. Aquatop also seems to stand behind their products pretty well.|
|11-30-2012 01:57 AM|
I never add larger filters which are expensive and a lot of maintenance just to increase flow. For that I use a simple cheap powerhead that can be hidden wherever needed much easier than filters.
To me the filter has to do a good job filtering, that's all. The circulation is a good job for a pump. I use 2217's on 75's and add powerheads.
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