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  • Just a quick note to thank you again and express my appreciation for all your help on this purchase. Your guys are great!
    - Rich
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    - Tim
  • I was kind of leery about shelling out that kind of money without knowing what kind customer service I would get. Not anymore! I now feel like I made a wise choice.
    - Nicole
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    - Travis
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    - Nicole
  • The item that I purchased was delivered a lot faster than expected, not to mention a professional job packing the light.
    - Michael
  • Thank you, John, for your prompt attention... I will definitely order from you guys again!
    - Jack
  • Tank is gorgeous. Whole family is loving it. Now we're spending our evenings watching it instead of TV!
    - Joan
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    - Lenny
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    - Pete
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    - Dr. Delbridge, PMP
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    - Thai
  • When it comes time to buy a new tank. Fish Tanks Direct will be the first place I go...
    - Marc
  • Customer satisfaction is certainly a top priority for you, and we would definitely want to do business with you again.
    - Janet
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    - Jimmy
  • The tank was delivered safe and sound. More over... the way it was packaged up for shipment was Excellent!
    - Darren
  • I couldn't find a better price on the item I wanted! The best price and the best service? You guys are great.
    - Dave
  • Fish Tanks Direct is PHENOMENAL! Their customer service is hands down the best I’ve come across in 10 years of reef keeping.
    - Wesley
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    - Rob
  • Thank you very much for your fast and efficient service... awesome!
    - Marlene
  • Just wanted to say thanks again for all you and your team did in assisting me with the fish tank. It looks great and I'm a very satisfied customer.
    - Scott
  • Thank you, John!!! Great customer service... give yourself a pat on the back!
    - Dary
  • Thank you sooo much for all your help. We love our new acrylic tank and setup. Everything is so much clearer and the color of the fish is much truer.
    - Jone H
Red Sea 2.2-lb. Reef Foundation ABC+ Supplement

Red Sea 1 kg Reef Foundation ABC+

Red Sea
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Product Description

Reef Foundation ABC+

Uniquely formulated powder supplement containing all of the elements of 
Foundation A, B & C, Plus Red Sea’s Coral Colors A & B

Ca | Sr | KH | Mg | K | Br | I

Reef Foundation ABC+ is a blend of all of the corals foundation elements of coral skeletons: Calcium, magnesium, strontium & carbonate,  with the addition of potassium, bromine and iodine in the unique ratio required by corals.


All of these elements need to be available in balanced proportions for positive coral health and growth. 

Red Sea’s Reef Foundation ABC+ is a uniquely formulated powder supplement containing all of the elements of Foundation A, B & C, plus Red Sea’s Coral Colors A & B (potassium, boron, iodine & bromine) formulated in the exact ratio as found in the coral skeleton. 

Although there are slight differences between the coral species, the mean ratio between these elements is fairly constant. Supplementing all of these elements in a fixed ratio according to the uptake of calcium will ensure an accurate replenishment based on the metabolic demands of the corals.

Reef Foundation ABC+ should be dosed on a daily or weekly basis according to the aquarium type and according to a measured uptake of calcium. Over time an imbalance may occur between the foundation elements.

If dosing daily, you should test all of the foundation elements weekly and make adjustments with the individual A, B & C supplements. If dosing weekly you should test all of the foundation elements monthly and make adjustments with the individual A, B & C supplements.


1g will raise the Ca level of 100 liters (25 gal) by 1.5ppm


package size/volume:

1 kg / 2.2 lb – powder

5 kg / 11 lb – powder

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