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ATI Essentials SPS Reef #1 - 2.7 Liter

ATI  |  SKU: 4260216215612
Regular price $30.95

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 store credit or a refund to your original form of payment minus a small 15% 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.

Part One (Alkalinity Complex) only of the ATI Essentials SPS two-part dosing system.

ATI Essentials SPS is a concentrated, ready-to-use two-part dosing system formulated for fast growth, bold coloration, and optimal metabolic function in SPS-dominated reef aquariums. Developed using insights from tens of thousands of ICP lab tests, this modern system ensures a precise balance of major and trace elements while maintaining stable water chemistry, without the risk of accumulation. Its pH-boosting, inorganic alkalinity source makes it ideal for demanding SPS corals.

  • Comprehensive Dosing
  • Coral Growth & Vibrancy
  • High pH Stabilization
  • Balanced Dosing
  • Trace Element Support
  • Highly Concentrated
  • Simplified Maintenance
  • Ready to Use

Comprehensive Dosing

Delivers 28 key elements, including calcium, magnesium, alkalinity, and 25 trace elements essential for coral health. This comprehensive approach prevents imbalances and supports long-term reef stability.


Coral Growth & Vibrancy

Promotes robust skeletal growth and intense coloration, optimizing the health of your entire reef ecosystem, including small polyp stony (SPS) and large polyp stony (LPS) corals.


High pH Stabilization

Contains only inorganic alkalinity sources that help maintain a higher, more stable pH, which is especially important for sensitive SPS corals.


Balanced Dosing

Provides boron, calcium, potassium, magnesium, strontium, and other major elements in a 1:1 dosing ratio. Supports customized dosing based on your tank's consumption, helping maintain ionic balance and prevent parameter shifts.


Trace Element Support

Delivers essential trace elements such as iodine, iron, lithium, manganese, molybdenum, vanadium, and others, engineered to support coral coloration and growth without unwanted buildup.


Highly Concentrated

Each 2,700ml bottle delivers 27,000 °dKH of alkalinity and 200,000 mg of calcium. Approximately 3.6 times more concentrated than traditional Balling two-part systems.


Simplified Maintenance

Replace complex, multi-bottle dosing routines with a streamlined two-part system. Replenishes consumed elements efficiently, reducing the need for water changes when nutrient levels are stable.


Ready to Use

Pre-mixed and dosing pump–ready. No need to dilute or manually prepare. Just connect and dose.


Available in Two Versions:

Essentials Mixed Reef

  • Ideal for: Aquariums with medium to high fish stocking and higher nutrient levels.
  • Alkalinity Source: Both organic and inorganic
  • Concentration: ~5× Balling
  • pH Effect: Medium to strong pH stabilization
  • Nutrient Reduction: Yes

Essentials SPS Reef

  • Ideal for: Aquariums with low to medium fish stocking and lower nutrient levels.
  • Alkalinity Source: Inorganic only
  • Concentration: ~3.6× Balling
  • pH Effect: Strong to very strong pH stabilization
  • Nutrient Reduction: No