<https://forum.aquariumcoop.com/topic/12409-why-are-ugfs-not-very-popular/#comment-97289>
<http://schema.org/text>
"I'm glad you're having success with the UGF! I mean, my tank was clean using it, I just felt I should be cleaning out a filter every once in a while!\n "
<https://forum.aquariumcoop.com/topic/12409-why-are-ugfs-not-very-popular/>