This would work fine, but remember to put your air-pump above the level of your container.
If you don't and the power goes out it may siphon your phyto out through your Air-Pump. No idea as these aren't sold much in NZL.
For me, I am using 2L Glass Flasks with a Rubber Cork that has been drilled for 2 rigid air lines. 1 is attached to an air-hose and the other is to let air out. I find glass to be alot better than plastic because I can cook it in the oven for a few hours to sterilize them.
HTH.
Scott.
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"Copepods, ain't no substitute" - The Mandarin Dragonet.
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