Also don't forget to varify your test kit results. Test kit reagents don't always react properly when they start to get old, and the better kits like Salifert apparently are much better than others. Get a fellow reefer or a LFS to test your water for you. Lots of good DIY skimmers in the DIY section, plastic places can cut the acrylic for you if you don't have access to a table saw.
Doug
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