RODI causing skimmer trouble

[Sharkey18]

So any clue as to why adding several gallons of top off water would cause my skimmer to go nuts? 

 

I am having a problem with siphoning from my top off container so until I fix that I am just adding top off water to my tank each day which end up being about 3 to 5 gallons. I pump the new RODI water from the storage container directly into the sump with the skimmer and it makes my skimmer go nuts and over flow. 

 

Any idea why? 

 

I just replaced all of my RODO filters including the membrane two weeks ago but that did not help. 

[gws3]

Is the water level raising?  Typically RO/DI would do the opposite and reduce the bubble formation.

[Sharkey18]

No, It does not affect the water level in that compartment of the sump. 

[Origami]

Are you stirring up something in that might be adding to the surface tension when you add the fresh water? Is the effect immediate, or delayed?

[fishgate]

When (ever?) is the last time you cleaned your RO/DI reservoir? They build up a lot of slime and it could be that dumping it all at once as apposed to trickling from an ATO is triggering the skimmer to go crazy.

[Jon Lazar]

If your reservoir has an open top, there may be a slick of dust and other household contaminants on the surface. This gets scooped up when you fill a bucket, then transferred to the sump.

[Sharkey18]

Thanks everyone. My rodi reservoir does need to be cleaned.... fun project for this weekend. 

[John Ford]

I saw this post and couldnt remeber the last time i cleaned mine so Its sitting in vinager right now

 

Thanks for the reminder