Hi I just bought a hydra internal 50.
Looks great, btw got a issue.
The instruction sheet states that install at 5cm below surface. I installed the air pipe too.
Realized when the filter below 5cm depth, air bubble will not come out w the water flow. Is the flow suppose to be small even in the high setting?
Only when 5cm above for hydra50?, I will get air pump out with the outflow.
Is it suppose to be like that?
I find it abit funny as my uv internal filter also similar kind but no matter wat depth air flow out w the outflow , Amt of air is control by air valve to let air in.
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