Ok i will try to find one tomorrow and give it a go again.. The only thing is that the bubbler vinegar seems to be getting sucked up alot during normal use.. not just when its turned off... But the check valve seems like it would be a good fix.. I think im going to put electrolyte in my bubbler 2 morrow just to try it out. If it sucks it back in atleast my production wont be at a stand still. O yea i never asked this should my cell be filled to like the very top.. As of now i have been leaving like a 1.5 inch gap uptop where there is no water or electrlyte but the plates are still submerged,.. Thanks,.. Ill keep trying