hi deeboi
if the joint between the intake strainer pipe and the hose isn't below the water line you can get air being sucked in there,and it isn't always noticeable
Agree 100%
This is what happened to me, the hoses got stretched and even tho they looked secure they weren't, I put a hose clamp on each side and hand tightened and fixed.
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http://www.monsterfishkeepers.com/forums/showthread.php?504763-Cheap-plants-less-nitrate!-POTHOS
*Go S. Vettel #1 rb8--4 MORE RACES LEFT! LET'S MAKE IT 4 BACK TO BACK WINS & 3 WDC!* :beer: