Turface turning blue! - The Planted Tank Forum
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post #1 of 7 (permalink) Old 01-14-2004, 06:41 PM Thread Starter
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Hi all,

I use Turface as substrate in one of my tanks. Some of the grains are turning bright blue! Not blue-grey, but really blue. I have used an Ich treatment lately, but can't recall if it was there before. It is affecting some grains, and not others, which are still tan. I would figure if it were staining from the treatment, it would affect them all, right? It also seems to only be affecting grains on the surface, not the ones underneath.

Anyway, has anyone else heard of this? I'm rather perplexed.

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post #2 of 7 (permalink) Old 01-14-2004, 06:43 PM
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is it forming a film between grains also?
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post #3 of 7 (permalink) Old 01-14-2004, 06:50 PM Thread Starter
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No film, it isn't blue-green algae. This seems to be actually affecting the particle itself. Some particles seem to be light blue-grey, as if they are on their way to being the bright blue of others. But neighboring grains can be unaffected. I haven't tried breaking one open - I'll get the hammer out.

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post #4 of 7 (permalink) Old 01-14-2004, 08:01 PM
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Weird. Let us know what it looks like inside. It is probably the methylene blue. Or maybe it is bonding copper out of the water? hmmmm That would take a HECK of a lot of copper.

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post #5 of 7 (permalink) Old 01-15-2004, 05:49 PM Thread Starter
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OK, so I did some experiments this morning.

1) broke some particles open. It is not colored inside, even though the entire outside is bright blue.

2) Put one particle in each of 3 treatments - vinegar, oxyclean (to try to oxidize), and ammonia. No effect after 10 minutes. Will see what they look like when I get home tonight.

The methylene blue would have been my first guess, except that it seems to be affecting certain grains specifically and not others, and the silicone isn't at all stained.

Will report back later with the results from the experiments!

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post #6 of 7 (permalink) Old 01-16-2004, 02:23 AM
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it's the methylene blue..that stuff stains everything in the tank..

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post #7 of 7 (permalink) Old 03-07-2004, 11:16 PM
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yeah but he said it hasent stained everything.. but i have no clue what it is.

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