BRS Bulk Pharma Kalkwasser (Calcium Hydroxide)
Couldn't load pickup availability
Shipping & Returns
Shipping & Returns
Free Shipping On Orders Over $49
All orders over $49.00 ship free using a combination of USPS, FedEx and UPS. All in stock items will ship out within 24-48 hours Monday-Friday. Drop ship items such as large aquariums, large sumps and full aquarium systems can take 1-2 weeks to arrive depending on availability. This shipping offer is only available in the 48 contiguous US. Not valid on wholesale orders.
$7.99 Flat Rate Shipping On Orders Under $49
If your order is under $49.00 shipping is only $7.99 using a combination of USPS, FedEx & UPS. All in stock items will ship out within 24-48 hours Monday-Friday. This shipping offer is only available in the 48 contiguous US. Not valid on wholesale orders.
Drop Shipping
There are a few items that are drop shipped directly from the manufacturer. Any item that drop ships will be marked on the product page. Large items like aquariums, stands, and lights may take anywhere from 1-3 weeks for final delivery.
Returns
We're happy to accept returns of new products in their original packaging within 60 days of original purchase for a full refund. Just give us a call or send us an email, you must receive an RMA number before shipping back your products. Returns received without an RMA number will be refused and sent back.
Returned items must be sent back to us in new and unused condition in the original packaging along with all accessories, warranty cards, manuals, software, cables, etc.
Special order items are non returnable and are marked on the items page.
Returns For Unused Open Box Products
Hold on to your packaging! If you purchased a product in the last 30 days that's opened but unused, has never seen saltwater and still has all of its original packaging (warranty cards, manuals, accessories, etc.) we can accept your return and offer a refund to your original form of payment minus a small 10% restocking fee.
- Products must be returned in the original packaging. Products returned with broken manufacturer seals, damaged or altered packaging, missing packing material, warranty cards, manuals and/or accessories will be treated as an unused but open item.
- Items purchased as new but have been opened and received more than 30 days after the original purchase will be returned to you free of charge.
- Items that show any sign of exposure to water or use, returned with damaged or altered packaging or missing packing material including warranty cards, manuals and accessories are not eligible for return and will be returned to you free of charge.
- All items sold under clearance, blowout, or liquidation are final and not eligible for return.
Manufacturer Defects & Warranties
Sometimes items just don't work out of the box, contact us and we'll work with you to make it right!
If your product arrives non-functional due to manufacturer defects, it may be exchanged for the same product within 30 days at no cost to you!
Purchased more than 30 days ago, but need warranty support? We'll ensure your issue is handled fast and efficiently by acting as the first point of contact. We'll introduce you to the best contact at the manufacturer, and make sure the manufacturer knows of the issue you're encountering!
Please Note:
- Shipping & Delivery fees are non-refundable.
- Gift Cards are non-refundable.
- Return shipping may be deducted from your refund.
- Please retain all product packaging and tags until you are completely satisfied with your purchase.
- Please open all packages and inspect all items for damage immediately upon arrival. Damages must be reported within 3 days of the reported delivery.
BRS Bulk Pharma Kalkwasser (Calcium Hydroxide)
Ultra-pure Kalkwasser for Reef Tanks!
BRS Pharma Kalkwasser is not your typical calcium hydroxide. It is made from an ultra-pure source that contains extremely low amounts of aluminum and compared to traditional kalkwasser you can actually see the difference. If you are adding Kalk to your ATO reservoir or a reactor, you will find that BRS Pharma Kalkwasser mixes faster with fewer impurities and is even more potent than the others, meaning you will not have to use as much, saving you money in the long run.
Two Sizes Available
- 2 Pounds
- 4 Pounds
Using Kalkwasser (Calcium Hydroxide)
Fill a 1-gallon container 4/5 full of RO/DI or distilled water and add 1 cup and 2 tablespoons (302 grams) of BRS Pharma Sodium Bicarbonate. Secure the cap on the container and shake it for about 10 seconds to help start the dissolving process. Remove the cap and fill the container the rest of the way with RO/DI or distilled water. Give the container a few more shakes and then let it sit until all the salts have fully dissolved before use.
We suggest adjusting your Calcium, Alkalinity, and Magnesium parameters to normal levels before using Kalkwasser.
How to Use Kalkwasser with an ATO System
Step 1: Test and adjust your aquariums calcium, alkalinity, and magnesium levels.
Step 2: Start by establishing the proper amount of kalkwasser to mix into your aquariums top off water reservoir.
- Low Demand - 1/2 teaspoon per gallon of top off water
- Medium Demand - 1 teaspoon per gallon of top off water
- High Demand - 1 1/2 teaspoons per gallon of top off water
Step 3: With RODI water fill your top off reservoir & mix in the proper amount of kalkwasser then allow the solution to settle for 30 minutes before using.
DO NOT OVERMIX: Excess mixing and air contact will decrease the potency of kalkwasser.
Step 4: Place your ATO systems pump or intake line is place 1/2" to 1" above the base of your reservoir, ensuring only the clear slurry is being dosed.
Step 5: Activate your ATO and monitor the pH of your aquarium as the kalkwasser solution is being dosed, not exceeding increases of 0.20 pH. Your ATO should be pumping water into a high flow area of your sump or display tank to help prevent precipitation. Adding kalkwasser too fast may result in precipitation rendering it ineffective.
Step 6: Monitor your aquariums calcium and alkalinity daily, adjusting the strength of the kalkwasser solution in your top off reservoir as necessary.
Note: We highly suggest using a pH controller to prevent against pH spikes and overdosing.
Refilling The Reservoir
Simply refill your container with fresh RODI water and add the proper amount of kalkwasser per gallon of new RODI water and mix. It is recommended to clean your ATO reservoir regularly, though you do not have to every time you replenish your ATO container.
Maximum Dosage - 1 1/2 teaspoons per gallon of top off water
One of the limitations of kalkwasser is its 1 1/2 tsp. per gallon saturation point. Anything more than that will simply fall to the bottom of your reservoir and become essentially useless. If your aquarium is requiring more calcium and alkalinity added than what kalkwasser can keep up with there are a few solutions;
- Start 2-part dosing
- Increase your aquariums evaporation rate with fans
- Vinegar method (experts only)
BSA Pharma Kalkwasser Instructions
How Does Kalkwasser Work?
Kalkwasser or Calcium Hydroxide Ca(OH)2 when mixed with fresh RODI water contains a perfect balance of alkalinity and calcium ions that can be added to your aquarium to help supplement what your corals consume when they grow. It is pretty easy to see where the calcium is derived from but the alkalinity can be a little more difficult to see, and when Kalkwasser is added to your saltwater tank a simple reaction takes place converting the hydroxide into available bicarbonate ions. Essentially the CO2 in your water and atmosphere will react with the hydroxide ions creating bicarbonate ions and increasing your tank's pH, due to less available carbon dioxide.
Ca(OH)2 = Kalkwasser
OH- + CO2 = HCO3 = Bicarbonate
OH- + HCO3 = CO3-- + H20 = Carbonate + Pure Water