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Sponges putting toxins in water?

This is a discussion on Sponges putting toxins in water? within the Coral and Reef Creatures forums, part of the Advanced Saltwater Discussion category; --> am i crazy or did i see you tank temp as 88F? what do yo keep your tank temp at?...

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Sponges putting toxins in water?
Old 02-28-2009, 10:28 AM   #21
 
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am i crazy or did i see you tank temp as 88F? what do yo keep your tank temp at?
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Old 02-28-2009, 11:21 AM   #22
 
The temp reading you see in the picture is 78.8. The chiller kicks on at 79, and drops the water to 77, so it stays in that range. It's hard to say if the corals were doing better at the higher calcium level. It seems like since setting it up, certain corals have just not done well, while others do fine, nothing new since dropping the calcium.

Regarding the PH, I have tested in the morning and afternoon, and it seems to range from 7.8 in the morning, to about 8.4 in the afternoon. Is this shift out of the ordinary?

DT's is a product that I buy at my local pet shop. Its this concentrated green liquid (microalgal feed) for corals. Phyto feast is another one they sell that is close to the same thing (may be more common). Is anyone else feeding with this type of food?
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Old 02-28-2009, 12:05 PM   #23
 
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that's a little bigger then i'm use to seeing, but it's still normal for PH to change when the lights are off, which is why people like to do reverse-photo periods for their refugiums. it'll stablelize the PH when the display lights are off. 77F is quite low. the average temp in the ocean is 81-81.5F. You may want to raise that, you may even see some improvements in some corals. depending on where they're from)
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