CALCIUM - COL MARINE CALCIUM 2500 ML
Add liquid calcium to maintain an optimal value, between 410 and 440 mg/l. Test the calcium content and add Calcium plus to compensate for consumption.
Ready-to-use liquid for calcium addition, it can be added directly to seawater.
Contains ingredients extracted from natural seawater by solar evaporation! This offers great advantages over products using chemical or mined raw materials.
Contents 2500 ml, increases calcium content by 50 mg/l in 2500 liters of water.
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What our customers say
35 businesses and hundreds of individuals trust us.
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A competent, attentive, and friendly team. A wide range of quality equipment, with a varied selection of live stock. A brick-and-mortar store that is good for the reefing community.
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A unique and exceptional place, the store is complete and well-organized. The staff is highly qualified in aquariums and very friendly. The variety of fish offered is incredible.
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My reef tank has been immaculately maintained for 6 months. Each visit is followed by a detailed report. My aquarium has never looked so beautiful.
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Excellent store with impeccable service.
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Specialty store with qualified and attentive staff. Wide selection of quality materials. Diversity in live species, possibility to order rare species.
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Everything is handled, the aquarium is always clean, thanks to the whole team. An impeccable rental service from start to finish. Our patients love it.
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They designed a freshwater aquarium perfectly suited to our living room. The result is magnificent and the installation was completely stress-free.
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Best aquarium store in Île-de-France, hands down. The advice is sound, the equipment is quality and the prices are fair.
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The aquarium has become the centerpiece of our restaurant. Our customers love it and always talk about it. A real plus for our establishment.
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After years of struggling alone with my marine tank, I entrusted its maintenance to L'Atelier. The result: zero stress, corals in great shape. I recommend it.
Do you deliver to France?
Yes, we deliver everywhere in mainland France within 24 to 72 hours. Free delivery for purchases over €79.
Do you offer payment in installments?
Yes, you can pay in 3 interest-free installments via Alma for purchases of €150 or more, directly at checkout.
Can I pick up my order in-store?
Absolutely. Choose in-store pickup at checkout and we'll prepare your order within 2 hours.
How to order a custom aquarium?
Request a quote on the Custom-made page. An expert will get back to you within 48 hours with a layout plan and a quote.
Do you handle the maintenance of my aquarium?
Yes, starting from €149/month for regular maintenance (water, plants, equipment). More information on the Maintenance page.
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