Recommendations on 70 gal. planted tank filter

FantasyFanVII

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I'm trying to find a good canister filter for my 70 gallon aquarium, and I swear I'm going insane so I thought I'd see if anyone here could offer some advice. I'm planning on making a high tech planted tank with a carpet and several moderate to fast growing stem plants. My ideal stocking (as of now anyway) is ~12 zebra/leopard danios, ~12 corydoras (can't decide which, but it'll be one of the typical ~2.5in species) 6-8 congo tetras, and one angelfish. Might end up with some small algae eaters (oto cats/bristlenose plecos) if I need them to keep diatom algae down on the back plants. I tend to get it no matter what I do.
As you can see I'm not 100% set on stocking, but I would like to keep to those species. And of course, the more schooling fish I can get the better, so a want a high capacity filter.
Here's the catch: I need it to be compatible with an inline CO2 diffuser, and possibly an inline heater. I was looking into the FX4 but I really don't want to have to Macgyver inline equipment to it.
Was also looking at this: Ultum Nature Systems DELTA 120 Aquarium Canister Filter There's not many reviews out there on it as far as I can tell. Anyone used one? And yes, I know it's only half the flow of the FX4, but I can run a SunSun or something with it if you guys think I should.
Any advice would be greatly appreciated. It's hard to even find a great starting point, and it's always good to hear from other hobbyists :)
 

TWiG87

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I run an EheI'm 2213 on my 20 gallon. I love the simplicity of it. Have you thought about an EheI'm 2217 and either the Sunsun you mentioned or a sponge to supplement. The EheI'm would be super easy to add any kind of inline accessories you want with its standard hoses.
 

Islandvic

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They are sold under the Aurora Polar brand on Amazon as well.

Consider filling it full of a couple layers of 20ppI foam sponge topped off with a single layer of 30ppi. Don't underestimate the power of foam sponge media. Ha

Aquaneat brand sells 2" thick sheets for $12 on Amazon. I just recently bought their 20ppI and 30ppI sheets and added them to our filters.
 

Black Thumb

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I'm with TWiG87. The EheI'm Classics are solid filters. I would probably run a 2217 and 2215 on a 70 though, rather than just one. If you want one, I think you'd have to go bigger with Eheim, and 2262s, while rock solid, are more than the two I suggested if I'm not mistaken.

I have a Fluval 305 that's not currently in service, too, and that was reliable as well for the few years I ran it. I just like the simplicity of the EheI'm Classics. Were I looking for something more trendy, given my experience with the Fluval 305, I'd probably look for a 407 to run a 70 gallon. The Fluvals likely have enough flow to be the only filter. My 305 seems to pump out much more water and create much more current than my 2215 - of course, I run the duck-bill on the 305 and the spray bar on the Eheim, so that may account for much of my perception.

I have been happy with both companies, and my LFS is happy to get me parts if I need them.
 

Beneful1

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My tank sounds very similar. I run my trusty old Fluval 404 canister packed with Biohome Ultra media in 3 trays, and a Marineland 350 HOB on the back for just in case backup.. Since I added the HOB I don't have to clean out the canister but every few months because the HOB picks up a lot of guck.. I have medium and fine foams in the back of the HOB and rinse them off maybe once a week.. It's been working great.
 
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FantasyFanVII

FantasyFanVII

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Thanks for the advice guys.

Black Thumb Beneful1 Like I said, I really like the FX4, but I can't find a good way to hook an inline diffuser to them. I want the inline diffuser for looks/efficiency, so I'd rather not swap it for anything. Thank you for the replies though.

I'm honestly leaning towards the CVS and SunSun combo. There's not a whole lot of info on the CVS, but it looks solid, has a good price, will work with an inline diffuser, and I'm curious. So why not? I'll always have the SunSun as a temporary backup if I need it. The biggest reason to take one over an EheI'm really is curiosity honestly. Yeah, yeah curiosity killed the cat, but how else will you learn right :)

As for a smaller EheI'm vs. SunSun for the 'secondary' filter, what sold me on SunSuns were their built in UV sterilizers. I know they're not necessary, but I figure it can't hurt to run one a couple hours a day, and hopefully it'll help clean up whatever diatom algae I inevitably get and end up knocking off plants and into the water column.

Still a few things I'm not sure on though. First, what SunSun am I getting? Was looking at the Hw303B and HW-702B. Looks like the first one is a better deal, but the second has lower GPH, which I wonder about being a good thing considering how much I'm already running. I don't want to stress out my fish with too much flow.

Speaking of flow, what should I do for outputs? Was thinking I'd use the default nozzle on the CVS, which is running the CO2, and a spray bar on the SunSun. The logic being, I want a more concentrated blast shooting across the tank for the CO2. I also want the spray bar to stop the current from getting too crazy, and to give me good surface movement. I know it sounds contradictory in a CO2 injected tank, but I use one on my high tech 20gal and I find it lets me keep high O2 and CO2 with no issues. Could probably be slightly more efficient without the bar, but I don't really care. Both outputs will be set up on the same side of the tank, to control the current.

Anyone have any thoughts on current plans before I actually order stuff? Once again, all advice is greatly appreciated :) And yes I realize I'm basically just leaning towards my original plan anyway. I swear I didn't plan on doing that.
 

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