[Is this biofilm in less than a week of having?]

Thanks RDspaguy.  Do you know if can add metal gone while tub is full? I heard should do while filling usually. If so how much to add for 410 gallons? Thanks

[Is this biofilm in less than a week of having?]

I've had my hot tub less than a week. We had a water delivery service supply our water because we didn't want to use the well.  First few days..not even used we had an orange brownish ring in tub and on filter. We wiped that down and didn't seem to return. Then after a few times used we noticed we have some foam and the filter looks like this already. We didn't use metal gone when filling because didn't know we needed to. I added chemical to decrease ph as soon as temp was over 80 degrees..took over a day until got to the right level. Using Bromine tablets and may have over shocked it by adding every day hoping that would help. Any comments on how I may have messed up or any solutions without having to drain the tub already would be appreciated!