Plastic or Aluminum for water tanks? - Page 2 - SailNet Community
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post #11 of 16 Old 12-20-2013 Thread Starter
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Re: Plastic or Aluminum for water tanks?

Thanks everyone. It sounds as if the consensus is against aluminum due to the pitting issues that can come from bleach sanitizing. Maybe I'll get pricing on steel vs plastic at this point. Sounds as if plastic may be more susceptible to mold growth, but then again you can bleach the heck out of it.

We use this water in general for non-potable use unless I'm boiling water for cooking pasta, etc. Does that change anything? I don't see how, but I could be missing something.
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Re: Plastic or Aluminum for water tanks?

I had a custom poly tank made with a 10" inspection port. If it were any bigger, I would be able to climb in.


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post #13 of 16 Old 12-20-2013
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Re: Plastic or Aluminum for water tanks?

My 36 year old boat has 2 plastic water tanks with two inspection ports each, one forward, one aft. These tanks have never given me an issue nor have they ever leaked. I do shock them with a bleach concentrate in the spring, flush a few times and then add a touch of bleach with each tank fill. I do drink from the tanks but I also have it run through a charcoal filter under the galley sink.
Hope this helps.
Tom

Edit: I have replaced the hosing on the potable system though.

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post #14 of 16 Old 12-20-2013
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Re: Plastic or Aluminum for water tanks?

An one using an Ultraviolet Purifier (12V)? BioLogic Ultraviolet Water Purifier Standard Models

Add to the water pump a voltage sensing relay to operate the UV only when pump is running. http://atkinsonelectronics.com/manuf...s/VRDC-40A.pdf

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post #15 of 16 Old 12-20-2013
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Re: Plastic or Aluminum for water tanks?

I have 2, 70 gal built-in fiberglass water tanks on my boat with inspection ports. The nice part is that the tanks lids are glued and screwed on. Unfortunately my front tank has developed a leak.(Crack i believe)
The good part is that i can take the lid off with some piano wire (cutting the adhesive) and do repairs.
I don't know that FRG is the best, but, i feel that it utilizes the space well.

I'd go with plastic with any tanks if i had to replace tanks.
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Re: Plastic or Aluminum for water tanks?

If you want GREAT, safe drinking water with no power usage. Use the Nature Pure QC 2. 800 gals per filter and for winterization you disconnect the filter and take it home.

Nature Pure QC2 Purifier - Basic Model - Water Purifiers and Water Micro Filters - General Ecology
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