I have an activated carbon reactor, will the reactor remove this stuff?

I don't know the answer but I shut my off for a few hours.

What distinguishes this from their regular calcium additive?

It's more than just calcium. It has all the elements of saltwater mixes. You use Reef Plus with this, and your saltwater tank gets the added vitamins and amino acids it needs to be healthy.

Seachem reef calcium. will it help strengthen the shell of my freshwater turtle? i have a reeve’s turtle/chinese pond turtle.

Made for saltwater! Need better foods for your turtle. Pond turtles don't need calcium supplements because it's usually in the water if you do water replacements!

My calcium (159) and magnesium (870) levels are low in my nano 13.5g saltwater tank. Will this boost both or do I also need a magnesium additive?

Water changes work better than anything in these smaller tanks. Is this a hard coral tank? I use Seachem Reef Complete and Reef Plus together. If its a coral tank and not a fish tank, then make sure your using a reef salt mix with those extra additives. You can also add Reef Rubble pieces to keep your levels up in between water changes. Smaller tanks need more water changes because things change quicker with less space.

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🌊 Elevate your reef’s calcium game — because your corals deserve the best!

SAFE COMPATIBLE USE - Avoids carbonate mixing to protect alkalinity balance
BALANCED MINERAL BLEND - Includes magnesium & strontium for optimal coral growth
100 SOLUBLE LIQUID FORMULA - Ensures immediate bioavailability without residue
PRECISION DOSING FOR REEF HEALTH - Adjust calcium levels easily with clear guidelines
ULTRA CONCENTRATED IONIC CALCIUM - Delivers 160,000 mg/L for rapid reef vitality

Seachem Reef Complete is a premium 500 ml liquid ionic calcium supplement delivering an ultra-concentrated 160,000 mg/L calcium source, fully soluble for immediate uptake. Enriched with magnesium and strontium chlorides, it supports robust coral and invertebrate growth. Designed for precise dosing, it helps maintain ideal reef calcium levels (380-420 mg/L) while safeguarding carbonate alkalinity by recommending alternate-day dosing with carbonate supplements.

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Pet Type	Fish
Product Dimensions	16.51 x 6.35 x 5.84 cm; 599 g
Item model number	333
Item Form	Liquid
Allergen Information	Allergen-Free
Colour	cranberry
Size	500 ml (Pack of 1)
Volume	0.5 Litres
Number of Items	1
Quantity	1
Specific Uses	aquariums
Batteries required	No
Batteries Included	No
Item Weight	599 g

SeachemReef Complete Liquid ionic Calcium Source, 500 ml

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