• DrTim’s Aquatics First Defense Stress Relief for Saltwater 2oz
DrTim’s Aquatics First Defense Stress Relief for Saltwater 2oz
DrTim’s Aquatics First Defense Stress Relief for Saltwater 2oz

DrTim’s Aquatics First Defense Stress Relief for Saltwater 2oz

10% off
$6.99
$6.29

Shipping calculated at checkout. This item ships free on eligible orders.

Select The Options Above

FIRST DEFENSE STRESS RELIEF -- NaH2O-PURE

  • Choose the size best suited for your system:
  • 4oz bottle treats 240 gallons (908 liters)
  • 8 oz bottle treats 480 gallons (1,817 liters)
  • 16 oz bottle treats 960 gallons (3,634 liters)
  • 32 oz bottle treats 1,920 gallons (7,268 liters)
  • 64 oz bottle treats 3,840 gallons (14,534 liters)
  • 128 oz bottle treats 7,680 gallons (29,069 liters)


Chelating agent to detoxify heavy metals
Vitamins to fight lateral line erosion
Great additive to freshwater dips of marine fish

First Defense was developed to help fish adapt to new environments by assisting the fishes' natural immune system.

Changing the environment of a fish causes stress that robs fish of essential nutrients and can weaken their immune system. First Defense is scientifically designed to provide stress relief and support the immune system, helping fish cope with stress due to bagging and shipping from the store to your tank, water changes, new fish additions, disease treatments, and other environmental changes.

Online Only Item

This product is not stocked at our retail location. It is sourced from one of our distribution warehouses after your order is placed. Please allow 3 to 7 business days for processing before shipment or pickup.

In-Store Item

This item is stocked at our retail location and is typically available for immediate purchase, in-store pickup, or shipping. Orders are generally processed within 1 business day, although processing times may vary during sales, holidays, or periods of high order volume. Inventory is updated regularly but is subject to prior sale.

At Aquarium Depot, dry goods may qualify for free shipping based on province and item type, while livestock, frozen/perishable, heavy, or oversized items are shipped separately with applicable shipping charges and restrictions based on service availability.

Please refer to our Shipping Policy
Add to Cart Select The Options Above