Need help with a skimmer Korallenzucht

[NICK0206]

Hello.
Need help with a skimmer Korallenzucht revolution S.
Skimmer is 4 years old. Last year, the gum of the pump inlet does not hold well. To prevent the rubber pump from popping out of the hole on its own, have to lean the pump against the glass wall of the sump.
Has anyone encountered such a problem? Or have to order a new gum?
Thank you in advance

[G.Alexander]

You can get it as spare part, it is not really expensive:

https://www.korallen-zucht.de/en/Sal...r-Skimmer.html

Another idea is to add a additional thin wall hose around the pump outlet which might make it to fix better again. Silicone would be optimal.

G.Alexander

[Michal]

I used white seal tape to tighten the fit, but later I siliconed it permanently.