Iron Oxide vs Aluminum Oxide - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 07-29-2014, 07:51 AM Thread Starter
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Iron Oxide vs Aluminum Oxide

I read that there are 2 types of phosphate absorbers: iron oxide (rust color) and aluminum oxide (white). But my concern is the removal of silicates (not phosphates) from my tap water. Can somebody here tell me which is better of the 2 types in removing the silicates?

Thanks for your replies.
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post #2 of 7 (permalink) Old 07-29-2014, 12:12 PM
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Aluminum Oxide.

Phosgard.

Angelo

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post #3 of 7 (permalink) Old 07-29-2014, 12:48 PM Thread Starter
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thanks bushkill! i compared the prices and phosguard is also much cheaper than GFOs.
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post #4 of 7 (permalink) Old 07-29-2014, 01:33 PM
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They are also very different products. GFO's have to be run in a reactor. Phosgard does well in canisters, or even air-driven box filters.

Angelo

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post #5 of 7 (permalink) Old 07-29-2014, 03:29 PM Thread Starter
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any further explanation why aluminum oxide works better in absorbing silicates?
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post #6 of 7 (permalink) Old 07-29-2014, 03:53 PM
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Quote:
Originally Posted by birbaliktanki View Post
any further explanation why aluminum oxide works better in absorbing silicates?
If you want to look into purchasing / building a reactor to run GFO, you'll have your answer. It isn't better, it's just infinitely more convenient. Additionally, GFO will strip trace elements as well.

Angelo

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post #7 of 7 (permalink) Old 07-29-2014, 04:29 PM Thread Starter
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i see. ok, thanks a lot!
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