shoptons

I thought i had my tub totallty ready to go but now have a slow leak somewhere in my hot tub. I cannot determine where it is coming from. Is there a trick to finding this out? The interior cabinet is very wet on the floor . No pipes feel wet nor does the shell. It seems to leak more when used. Maybe because the jets get turned on or maybe not even due to leakage and the it is because water leaves on peoples bodies? I am at a loss as to what to do, Today I placed several plastic bowks in the cabinet to see if I can narrow down where it may be dripping from. Any suggestios would be welcomed.

I have filled my hot tub and found that the lock ring had cracked and was not holdng my filter cartridge down and tight. I managed to get it running anyway - using a brick to hold the catridge in tight . No leaks at all but impractical because you could not cover the tub. I ordered a new lock ring - correct one for my unit. I have put in on and started up the tub but it leaks .As soon as the filter starts to run I ccan see air come around the side of filter cartride housing and it eventually fills with water and drips out from there. Any idea how I can get the seal tight enough to not leak but still possible to remove the lock ring to clean filter cartrdge? I tried putting on plumbing seal tape - still leaking All suggestions are welcome. Thank you