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#1
09-12-2011, 04:00 AM
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Websites are great for opinion but poor for facts. Put your faith in books written by scientists and industry experts.
"There is a similar range for acceptable salinity, but it is a narrow band, around 35 to 36 parts per thousand (ppt). At normal reef temperatures temperatures, this is a specific gravity of about 1.025 - 1.026." p15 Marine Invertebrates by Ronald L. Shimek, PH. D. 2004 This must be the light? http://www.aquaticlife.com/products/286#1 I don't think I've ever seen 18" HO T5 bulbs for sale before. Does Big Als sell replacement bulbs in their store? I don't see them on their site. The recommended replacement schedule for T5s is up to every 6 months I believe. I personally don't follow that with my own fixture but I'm sure some people do. Is your 20gal only 20" long?
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"We shall dive down through black abysses... and in that lair of the Deep Ones we shall dwell amidst wonder and glory forever." - H.P. Lovecraft Old 120gal Tank Journal New 225gal Tank Journal May 2010 TOTM The 10th Annual Prince George Reef Tank Tour 
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#2
09-12-2011, 04:33 PM
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That can't be the fixture cuz thats what I got( a 4bulb t5ho at that ) and my coral are not bleaching my ponci is fine and my borneman nem moved from the top to the sand now if the bulbs are old they should be replaced at least once a year as for salinity yes 1.025 is for reefs anything lower is fish only also I used to shop at big ALS when I lived in Alberta and yes te will tell you whatever u wanna hear so long as u leave with there products aquarium illusions and blue world are deff the better choices if u want good advice ( red coral wasn't open yet so i have nothing to say about them)
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#3
09-12-2011, 04:37 PM
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Also big ALS only sell IMHO cheap bulbs I would spend the little extra buying brands like ATI, KZ, and guiseman( wrong spelling)
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#4
09-12-2011, 05:12 PM
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__________________
-Lisa-
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Hybrid Mode
