I'm not sure what ridges you speak of, are you speaking of where the plastic tube connects/slips onto the metal at the base? if so yeah they have ridges at least all the ones I've seen. I havent tried with parkes tank but have tried with other tanks and no....no leaks.
I will say this, the 'loop' ones are old style lol Yes maximum wicking is to use a razor or sisors and cut the loop.
I will say this, the 'loop' ones are old style lol Yes maximum wicking is to use a razor or sisors and cut the loop.
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But I don't care, call me a cheater. I'm a fan of Bill's and will stay a fan! I've got Chibi Tanks in my sig linked to his site at least?? That works...right? Right??