Placement for Eheim Pro 3e 2078 inlets and outlets

[hc rotala]

My filtration lay-out is 1 canister (25 liters capacity) generate by 2 pumps (1150 l/h each).

[o2bubble]

Removed one inlet yesterday after i found that the flow suddenly dropped. The cause was the net i put inside the cage stuck with debris (to prevent shrimps and small fishes from getting into filter). Flow increase to 60% now and both outlet slightly stronger than I was having with just one outlet from 2028, just nice for both reactor and lily pipe flow Hope this will helps those who are thinking of using pro3.

[o2bubble]

Thanks for your suggestion, I thought about that as well but thinking this will not really contribute to much difference with using a T-joint as compare to the step down from 16 mm to 12 mm at each end of the outlet. Besides I wanted more flow towards the CO2 cyclo reactor, thus the straight end is to the reactor.

Anyway, I'm quite satisfied with the current configuration in terms of flow rate. My lily pipe flow is strong enough to push water in a anti-clockwise direction gently (slight ripple on surface) and my reactor cyclo has good turbulence at the top to ensure good co2 mixing. This met the objectives I have set out to achieve in first place:

1. Increase tank circulation
2. Increase flow slightly in CO2 cyclo reactor
3. Avoid using 2 filter as it takes up more space, more hoses and more maintenance to clean filter.

In addition, I get:

1. Higher bio-filtration
2. Constant flow/advance filter capabilities
3. Lily pipe to eliminate surface protein film

In summary, it was a great investment given the cost of this upgrade is less than $300 (after sold off 202 compare to buying another small used filter with eheim substrate pro media which will cost about $150.

Imagine that as every moments when it it comes to filter maintenance, with such lot of chores to acquire the start-up flow, how boring it be.

Try using a "Y" type splitter instead of "T", less pressure loss so smoother the out-flow.