Westchem Mfg. Ltd.
Industrial Water Treatment & Specialty Chemicals


Welcome to our Tips Page for

 RV & Marine Owners

Here you will find useful and money saving ideas from our laboratory

 and our own customers.

Join us with your tips and ideas!

Tip of the Month

Changing from Toxic to 

Environmentally Safe Holding Tank Products

Now, that most of us know about the toxic effects of Formaldehyde, Para-formaldehyde, 

Quaternary Ammonium Chlorides and Bronopol based holding tank products, 

how do we change over?

First, remember, the old chemicals are still in the system and need to be removed. 

Also, some old chemicals are absorbed by or "cling to" the plastic walls of the tanks.  This

can cause your new Bacterial Products to not work as expected.  

So let's get rid of the problem!        

                                            It's easy to do!

            1.    Simply fill your Holding Tank(s) with fresh water and allow to sit for 

                    about two hours then drain into approved Sani-Dump.            

            2.    Repeat if convenient.  

            3.    Start by using Westchem Crystal Blue because it  will not be effected by the

                   toxic chemicals and is a great way to remove them. Follow instructions

                    for normal usage.  One (1) lid full per Tank Dump. One jar will yield about 

                    15 treatments.  Finish using Crystal Blue and your tanks(s) will be free of 

                    those toxic chemicals.                                                                

            4.    Continue to use Crystal Blue as your regular Holding Tank Product or        

                    switch to Westchem Zyme-Out the liquid bacterial formula.

That's it!!    

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