Placement of external reactor

[spinex]

Is it better to place my external CO2 reactor before or after the chiller ? Or there's not much differences ?

[Goondoo]

Is it better to place my external CO2 reactor before or after the chiller ? Or there's not much differences ?

I believe some would say after chiller since CO2 dissolves better in colder water

[PeterGwee]

Not significant as the topic has been discussed before by Vinz and folks.

Regards
Peter Gwee

[BFG]

Before chiller for me. The co2 will have a longer journey and will easily be absorbed by the water. The cold water will have a shorter journey into the tank and temperature difference will be negligible. This is my setup. YMMV.

[solonavi]

Before chiller for me. The co2 will have a longer journey and will easily be absorbed by the water. The cold water will have a shorter journey into the tank and temperature difference will be negligible. This is my setup. YMMV.

[Goondoo]

Before chiller for me. The co2 will have a longer journey and will easily be absorbed by the water. The cold water will have a shorter journey into the tank and temperature difference will be negligible. This is my setup. YMMV.

good point

[spinex]

Before chiller for me. The co2 will have a longer journey and will easily be absorbed by the water. The cold water will have a shorter journey into the tank and temperature difference will be negligible. This is my setup. YMMV.

That's my current setup too. My thoughts are Co2 will dissolve better and the cold water from the chiller will go direct to tank in this way improve efficiency of the chiller (minimise the journey from chiller to tank).

Anyway thanks to all folks for the different ideas/reasons.

[vratenza]

if i have 2 X 2028 working in tandem, can i put the co2 reactor after one of the filter and the chiller after the other filter? is this better in terms of efficiency of the filter power?

[BFG]

You're in the same dilemma as me. I am going to setup a 4ft with 2x2026. I've been thinking of using 2 external reactor and merge the 2 outlet from the 2 external reactor into 1 and connect it to the chiller. The outlet will be split into 2 and will exit into 2 Eheim Installation Set 2 adjustable rainbar. I have most of the stuff from my previous setup except another external reactor. My thinking is that with the 2 2026, the flow is just nice for my Daeil 1/5hp chiller, that's why I merge it.

For your case Vratenza, you might want a closed loop for your 6ft. Find out the required water flow for your chiller. If it excessively exceed the flow from 2 2028, a closed loop is another water flowing setup to look into. You could add an external reactor to the closed loop so that the co2 supply will not be cut off when the external filter is taken offline for filter maintenence.

[vratenza]

You're in the same dilemma as me. I am going to setup a 4ft with 2x2026. I've been thinking of using 2 external reactor and merge the 2 outlet from the 2 external reactor into 1 and connect it to the chiller. The outlet will be split into 2 and will exit into 2 Eheim Installation Set 2 adjustable rainbar. I have most of the stuff from my previous setup except another external reactor. My thinking is that with the 2 2026, the flow is just nice for my Daeil 1/5hp chiller, that's why I merge it.

For your case Vratenza, you might want a closed loop for your 6ft. Find out the required water flow for your chiller. If it excessively exceed the flow from 2 2028, a closed loop is another water flowing setup to look into. You could add an external reactor to the closed loop so that the co2 supply will not be cut off when the external filter is taken offline for filter maintenence.

the chiller i bought is C0500 with minimum fow rate of 500gph.
Quite confused with the "closed loop" setup you mention... mind if u elaborate more? illustration will be nice

[mordrake]

the chiller i bought is C0500 with minimum fow rate of 500gph.
Quite confused with the "closed loop" setup you mention... mind if u elaborate more? illustration will be nice

500gph? think you may need to get a separate pump for your chiller. the flowrate for the 2028 not high enough.

[vratenza]

500gph? think you may need to get a separate pump for your chiller. the flowrate for the 2028 not high enough.

seem like u are right! 2028 output only 277GPH.......shucks....... guess this chiller is not an easy one to handle.....

Any suggestion on how to set the chiller up given that now i cannot attach it in series with the filtration circuit?

[BFG]

Ok, I will briefly explain what a closed loop is.

A closed loop system is where water will be taken out by a dedicated pump whereby the output from that pump is returned to the tank. An external canister filter setup normally is considered a closed loop too as the tank water still return back to the tank through the same pump.

For your 6ft setup, you will need a dedicated pump to suck in water from the tank into the chiller. You can add an external co2 reactor at the pump outlet for continuous supply of co2 that will not be interrupted for maintenance.

Tank->external pump->external co2 reactor->chiller->tank.

What you need to purchase.
External pump, 2,4 or 6 double tap, external co2 reactor, y splitter( depending on setup).

The y splitter is used as I forsee that the amount of force from a 500gph pump might uproot some plants which is located too closely to the outlet of the pump. You can split the outlet into 2, thus lessening the flow from each outlet. You could use 2 rainbar as the output as this setup will better diffuse the co2 enriched water into the tank. It'll be vertically placed in the tank. Your 2 2028 does not need the rainbar as it will not be connected to any external equipment. Use a point source outlet for the filtered water.