Quote:
Originally Posted by alakdan168
Hi. Actually the bubbles that are forming are from the airstones and not from the hydra filter. Instead of bursting, the bubbles held, forming something like bubble-nest.
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Ah okay, thanks for clarifying. There are several factors that caused this situation. Have u check whether the tube-connection between the airstone & air pump is loosen? Airstone may tend to clog up with particles after long usage which reduces its function of bubbling.