SEA Magnesium, 237 mL (8 fl oz)

SKU: A8261 | UPC: 15561182614
Format: 237 mL (8 fl oz)
Categories: , , ,

Fluval SEA Magnesium is a concentrated compound formulated to replenish magnesium levels that become depleted naturally over time through coral absorption.

  • High quality magnesium chloride supports optimal pH level and strong coral growth
  • Prevents calcium precipitation
  • Will not affect the delicate ionic balance of a marine aquarium
  • Ultra pure and free of unwanted contaminates, gluconates, nitrates and phosphates
  • For use in saltwater aquariums
Dosing Instructions:
Add 5 mL per 75 L (20 US Gal.) once a week. Weekly dosage provides 5 mg/L of magnesium. Note that magnesium is essential in the maintenance of balance between calcium and alkalinity levels, it should be tested regularly and supplemented as required.
SALTWATER ONLY2019-03-07T16:31:37-05:00



How do I get rid of visible waste on the live rock in my reef tank?

Install a polyester aquarium filter pad or floss in your filter, then direct the current of a circulation pump at the rocks and coral. This should help liberate the waste, which will in turn be collected in the filter. After 1-2 hours, remove the filter pad or floss and perform a water change.

I just boosted my aquarium’s alkalinity level and the water turned cloudy. Is the alkalinity supplement defective?

When dosing alkalinity supplements, you must be aware of your tank’s calcium level. If your calcium level is too high or low in relation to the alkalinity level, you will create precipitation, which can look like cloudy water. When dosing alkalinity, always consider the net volume of your tank. With larger quantities of live rock, deduct 20% of the aquarium volume when dosing alkalinity as a starting point, then adjust by testing and verifying the resulting KH value.

How do I control phosphate in a saltwater tank?

Cheatomorpha algae can grow abundantly when provided with strong lighting and can help eliminate these unwanted compounds naturally. Use a test kit to identify the source of the phosphates and address it directly.

Do Fluval SEA marine supplements have a specific shelf life?

Yes, there are specific expiry dates depending on the product. Iodine, for example, has a 2-year shelf life, while Trace Elements, Strontium and 3-Ions have 3-year shelf lives. Check the back of the label for the best before date.

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