Water level dropping in 2 filters

[SuthernReefer]

Have a 4 stage 100GPD AquaticLife RODI system. Changed the filters today and did a water change on my aquarium. I am hooked up to booster pump, it is working properly.

I just noticed that after turning the inline valve off, the water level drops in my sediment and carbon block canisters. What is causing this? Or am I tripping and this is normal. I never remember this happening before today.

Thanks

 

[Saltyreef]

Have a 4 stage 100GPD AquaticLife RODI system. Changed the filters today and did a water change on my aquarium. I am hooked up to booster pump, it is working properly.

I just noticed that after turning the inline valve off, the water level drops in my sediment and carbon block canisters. What is causing this? Or am I tripping and this is normal. I never remember this happening before today.

Thanks

Normal. If it bothers you you can crack the canisters while the system is running and bleed the air then reseal.