Using 2 x 2078 filters?

[o2bubble]

Thinking of using one 2078 filter to drive 1/4 hp Arctica chiller and the other 2078 to drive NA external CO2 reactor. Will the chilling be slower as compared to using just one 2080? I realised that my 2080 flow dropping now to a slow. Any comments?

[blue33]

Best is use 2 filter for a big tank. Or you can use Jaqno prefilter connect with pump follow by chiller alone, that will maintain the flow rate.

[BFG]

Do you have the 2 x 2078 or are you planning to buy them?

[o2bubble]

bro blue, thanks and I thought of it as well but think that I'm prefer to use a filter instead of pre-filter since might as well get an extra filter with the 2 sets of connections anyway.

bro bfg, I'm planning to buy 2 sets of 2078 or 2076 to replace my 2080.

[blue33]

external pump is still the best constant flow rate you can get than the canister set. ADA filter pump is also using external pump.

[BFG]

I agree with my fellow moderator. If you could, get a dedicated pump with a Eheim Installation Set. Connect these to the co2 reactor and chiller. This close loop flow won't need maintenance so much unlike if you connect it with a canister filter.

tank--Installation Set--pump--co2 reactor--chiller--tank

How big is your tank?

[o2bubble]

bro bfg, if this way, would not the filtration be affected since the external pump draws water away to the chiller and reactor instead of going to the (only) filter? My tank is 120x50x50 cm.

[BFG]

bro bfg, if this way, would not the filtration be affected since the external pump draws water away to the chiller and reactor instead of going to the (only) filter? My tank is 120x50x50 cm.

Nope, the canister filter would still be pumping water into it. Just that the closed loop by the pump would not be disturbed when you removed the canister filter for maintenance hence wouldn't affect the temperature of the water. The level of co2 addition would not be disturbed as well as it is in constant flow.

On hindsight, with the above setup, you may want to buy just 1 more canister filter instead of 2 more.

Your setup-
tank--Installation Set--pump--external c02 reactor--chiller--tank
+
tank--existing canister filter--tank ( if you want 1 more canister filter, follow this the setup )

Hope this helps!

[Navanod]

Bro. You mentioned that the 2080 is slowing down? This canister although bigger, actually have a lower max head pressure than the 2078. I believe 2078 have the highest pressure rating of all the Ehiems for some strange reasons.

Not sure if it's your 2080 clotting up or is it just not strong enough to overcome the resistance of the loop.

By the way, I read that the CO2 reactor is a flow killer if placed after the canister. You can try moving it to before the canister (right after the tank) if you have it after the 2080 now

[o2bubble]

bro nava, yes, the flow used to be quite good 9 months ago when initially installed and after a while it slowed maybe due to clogging and also addition of the CO2 reactor. That's why I'm thinking of switching to the highest flow rate offered by 2078 but using 2 of them as I had a 2078 before and the flow drops much as well after sometime.

[Navanod]

Perhaps you can try moving the reactor to before the canister first rather than to switch out the 2080 so quickly bro.
Heh, and maybe do some filter cleaning while you're at it!

[BFG]

Is co2 before the filter safe?

[Navanod]

Is co2 before the filter safe?

IMHO, As long as the CO2 concentration is not crazy high, the bacterias in the filter wouldn't care. As long as the rule of thumb of 30ppm is adhered to, that's pretty safe since the water flow is fast enough that the CO2 should not build up within the canister.
Its low O2 levels that'll harm the bacteria but that's a separate parameter altogether.

I may be wrong though, but my claims are mostly from reading. Managed to dig up one of the articles that addressed this issue quite fully

http://fins.actwin.com/aquatic-plant.../msg00236.html

Hope that helps?

[blue33]

I've done that and currently using that method. So far so good. Fast flow rate is advisable for this method.

[StanChung]

If you like the regular bubble chopping sound. LOL

I didn't know there's a difference to flow putting the CO2 before the filter and after.

[blue33]

So far no sound doing that for very long time, maybe yours spoilt. Many people are doing that with successful and i see good result achieved.

[StanChung]

I think you stingy with the CO2. [or I too generous!]

[blue33]

3 bps is stingy? lol. CO2 is not about stingy is about getting it to dissolve into the water column. You can even inject 10bps but it all goes to heaven.

[Navanod]

I agree with blue that there should not be any chopping sounds as the entire point of an external CO2 reactor is to fully dissolve any bubbles and achieve near 100% dissolution
I've obtained a powderful reactor in preparation for a new tank, hehe. Its similar to NA's but larger, and with eheim rainbars built into it to spin the water evenly

Shown next to my old NA's

From left to right, outflow / CO2 inlet / inflow rainbar

Got this off a nice bro awhile back...hopefully no chopping sounds for me

[StanChung]

3 BPS only? haiz- I forget you are using small tank Adrian.
So no point to argue because setup not the same. My CO2 bubbles are 'uncountable' because it's for a 5ft tank.

Maybe if i have such a large reactor as shown above the bubbles will be dissolved properly before it enters the filter.

However my question-Positioning the CO2 reactor after the filter cause a marked slowing of the flow compared to before?