Help CO2 injection with 2 filters

[riioKen]

Hi guys, I'm starting a new 90g tank. Under the tank, will be 2 Oase Biomaster Thermo 600. I plan to use as in tank equipment, 2 Lily pipes and 2 intake with surface skimmer.

The CO2 injection is made by a CO2Art kit with an inline diffuser.

This is first time for me having 2 filters and injecting CO2 at same time. Should I buy a new inline for the second filter or its ok injecting with only 1 filter?

 

[*Ci*]

I have 2 Oase BioMaster filters on both of my tanks (68g and 84g) and on both tanks I have the co2 inline diffuser on only one of the filters. Each filter output is connected to a spraybar, so there are double spraybars in the tank. One spraybar is directed across the surface for a ripple effect and good oxygen exchange and the other one, with the diffused co2 coming through it, is pointed downwards for distribution throughout the tank.

 

[BigWave]

Having one diffuser on one canister if absolutely fine. You fine tune the bubble rate coming out of the regulator to acheive how much CO2 you want in the tank. Edit: Sometimes it can take a few months to dial in CO2 correctly. If you have fish or inverts go slow and take lots of notes. If your going to plant heavly from the beginning look into the 1.0 pH drop method to measure CO2 concentration.

 

[riioKen]

I have 2 Oase BioMaster filters on both of my tanks (68g and 84g) and on both tanks I have the co2 inline diffuser on only one of the filters. Each filter output is connected to a spraybar, so there are double spraybars in the tank. One spraybar is directed across the surface for a ripple effect and good oxygen exchange and the other one, with the diffused co2 coming through it, is pointed downwards for distribution throughout the tank.

Thanks, so a good way is to have one Lily all the way down in the water, the other near the surface for gas exchange?

About position of both pair of in/outflow:
- Left side of the tank: 1 lily at front and the intake at back of the tank
- right side of the tank: 1 lily at the front and the intake at back?

Or should it be swapped?
Inflow at back on one side, while the other intake at front and lily at the back of the tank?

 

[riioKen]

If your going to plant heavly from the beginning look into the 1.0 pH drop method to measure CO2 concentration.

Yeah, I plan to plant heavy at the beginning, the tank has more than 50kg of Tropica soil (8cm front, 10-12 mid, 15 at the back).

I'll buy TC plants and reuse most of my plant on another tank that will be put down.

 

[*Ci*]

I am not familiar with the flow patterns of lily pipes. I’ve always preferred spraybars for larger tanks (which come with the Biomasters) but I exchanged the stock bars for longer ones with slightly larger diameters for the best possible distribution of water throughout the tank, imo.

 

[Burr740]

You should seriously consider a reactor for a 90 gal. I have a 16/22 co2 art inline on a 40 gal. To get enough dissolved in the water I have to crank the co2 so high that huge bubbles come out and half of it gets wasted at the surface. There's no way ime only one of these would be enough for a 90 gal. Go ahead and run two would be my advice

Ive also tried inline diffusers on 75 gal tanks, 19/25s which are bigger than the one you have. Ive never had one that could get the job done without tons of micro bubbles and wasted co2.

But I will say that I tend to shoot for 1.2-1.4 PH drops. Somebody looking for only a moderate amount dissolved in the water may have better success with them

 

[BigWave]

so a good way is to have one Lily all the way down in the water, the other near the surface for gas exchange?

Ideally you want both lilly pipe outputs barely below the water surface so as to create as much water adatation and ripples as possible. The trick is to have it low enough and the flow to carry the CO2 bubbles throughout the entire tank.

An old tank of my shows 2 sets of lilly pipes. Input and output swapped on each side to create a water flow pattern completely around the tank.

 

[riioKen]

You should seriously consider a reactor for a 90 gal. I have a 16/22 co2 art inline on a 40 gal. To get enough dissolved in the water I have to crank the co2 so high that huge bubbles come out and half of it gets wasted at the surface. There's no way ime only one of these would be enough for a 90 gal

The tank is a bit atypical, the dimensions are 110x50x60, shorter to a standard 90g(considering the substrate, it's around 280 litres 75-80g). I heard that plants prefer bubbles that why I never thought of buying a reactor but I can for sure buy one if needed. Which one do you suggest?

An old tank of my shows 2 sets of lilly pipes. Input and output swapped on each side to create a water flow pattern completely around the tank.

Exactly, thanks, I needed a lot the pictures.

 

[Burr740]

The tank is a bit atypical, the dimensions are 110x50x60, shorter to a standard 90g(considering the substrate, it's around 280 litres 75-80g). I heard that plants prefer bubbles that why I never thought of buying a reactor but I can for sure buy one if needed. Which one do you suggest?

Yeah Im not talking about the useful micro bubbles that you can barely see and actually travel around in the water and either dissolve or stick to leaves. Plants do like those but thats not what I mean. Im talking about bubbles big enough to just go straight to the surface and pop

You can easily find out if the diffuser will get the job done by cranking the co2 until big undesirable bubbles come out, then backing it down until they dont. See what kind of PH drop youre getting. *Editing to add that the diffuser will need to be ran for a few days to fully saturate itself with water, brand new you'll have tons of big bubbles regardless

As for reactor brands Im not that familiar with whats out there, I just make them out of pvc pipe.

 

[riioKen]

You can easily find out if the diffuser will get the job done by cranking the co2 until big undesirable bubbles come out, then backing it down until they dont. See what kind of PH drop youre getting

Yeah, well I have to do testing for sure.

As for reactor brands Im not that familiar with whats out there, I just make them out of pvc pipe.

Nice, well I did fast check on famous site in Europe and I didn't find much...

Thanks Burr

 

[BigWave]

On this note there are multipe types of lilly pipes. Each end acheives a different result. Some twirl the water. Others create a lamnar flow pattern, yet others make the water go upwards to create them wripples.