Macroalgae Acclimation | Product Usage | AlgaeBarn Help

How do I Acclimate my Macroalgae?

The first thing you might be wondering is, "should I acclimate my macroalgae?".  To which the answer is...Absolutely, you should! While macroalgae doesn't experience all the same types of stress that fish or invertebrates do during shipping, they can and do experience stress of which may be sufficiently harmful enough as to cause portions of the algal mass to die. Particularly with a newly established patch, a few dead, rotting pieces can adversely affect neighboring pieces of algae (bad apple effect!). Therefore, it's important to ease the algae into its new growing space.

The main causes of stress for macroalgae are:
  • Temperature
  • pH
  • Light shock
All of these stressors can be avoided with the following instructions:
  • When your algae first arrives, simply make a couple of small openings in the package and allow the seaweed to breathe a little. This will allow for slow, gentle gas exchange. As carbon dioxide levels drop back closer to normal, the pH value will gradually increase.
  • Warm/cool the package as necessary to match the aquarium temperature. After approximately 15 minutes, it will be all right to fully open the bag and pour the contents out through a net. The wastewater is discarded. As an option, one might perform a quick rinse (again through the net) using aquarium system water. This water should also be discarded. The macro can then be tossed directly into the tank!
  • Leave the lights off for the remainder of the first day. This lessens metabolic pressure on the plants while they adjust to their new environment. If possible, it will also be advantageous to dim the lights over the new plant mass the following day.


Because all of the macroalgae we offer has already been inspected/pretreated to remove potential pest organisms, you can spend more time with your fish!

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