| Chemistry Parameter | Recommended Aquarium Level | General Ocean Value |
| Alkalinity (KH) | 150- 200 ppm, or 9-11dKH | 125-150 ppm, or 7-9 dKH |
| Calcium | 375-450 ppm | 420 ppm |
| Magnesium | 1250 -1350 ppm | 1275 ppm |
| Salinity (Specific Gravity) | 1.019- 1.021 specific gravity (25-28 ppt) for fish ONLY; 1.025sg (34 ppt) for invertebrates (or mixed aquariums) | 34 ppt or 1.025 sg |
| pH | 7.8-8.4 | 8.0 -8.3 |
| Ammonia | under .1 ppm | generally under .1 ppm |
| Nitrates | under 15-20 ppm fish, under 1 ppm reef | generally under .1 ppm |
| Redox (ORP) | Balanced, see Aquarium Redox | Variable (although more important than many realize) |
| Silica | under 2 ppm | .06 – 2.7 ppm |
| Strontium | 5-15 ppm | 8 ppm |
| Iodine | Generally not a problem with modern salt mixes & maintenance, however levels should not fall below .06 ppm with most corals/algae present | .06 ppm |
Sunday, December 12, 2010
Water Chemistry
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