Fluval Filter Help Please

[0041tonyb]

[acronym="keep on laughing"]KOL[/acronym] :I AM NEW TO THIS FORUM AND I MAY MAKE A FEW MISTAKES SO PLEASE HAVE PATIENCE WITH ME.
I have a fluval filter type 403,it has recently started to emit a sudden burst of air bubbles every 30-50 seconds.
I have cleaned filter and checked all hose connections to no avail, have anyone got any ideas as to what my problem might be?
Thanks in advance for any help.

 

[diet]

[acronym="keep on laughing"]KOL[/acronym] :I AM NEW TO THIS FORUM AND I MAY MAKE A FEW MISTAKES SO PLEASE HAVE PATIENCE WITH ME.
I have a fluval filter type 403,it has recently started to emit a sudden burst of air bubbles every 30-50 seconds.
I have cleaned filter and checked all hose connections to no avail, have anyone got any ideas as to what my problem might be?
Thanks in advance for any help.

Is that model and internal or external filter??

If its an external filter check your rubber seal around where the filter fits back togetheru wil prob find its kinked or worn