You can grow spirulina in larger tanks, or even in a basin or pool outdoors (if you live in a warm climate). However, it will be easier to manage the spirulina culture indoors in a small tank.
If you want to harvest larger amounts of spirulina to dry, get a larger supply of fine cloth or mesh to make things easier.
Sodium bicarbonate Magnesium sulfate Potassium nitrate Citric acid Salt Urea Calcium chloride Iron sulfate Ammonium sulfate
Spirulina starter cultures are usually as simple as a bottle containing spirulina algae in its medium (water). Buy spirulina cultures only from sources you trust. Since spirulina can absorb heavy metals and other toxins, you want to ensure that the starter supply has come from a safe source.
Some spirulina growers use artificial light, but results will be better with natural light.
You can run tap water through a standard faucet filter (such as a Brita or Pur filter), and use this for your tank. If your water is chlorinated, you should de-chlorinate it using supplies found at aquarium supply stores.
Spirulina can tolerate lower temperatures without dying, but will do best in warm environments. If your tank is too cold, you can warm it with an aquarium heater, which can be found at an aquarium supply or pet store. [2] X Research source
If your colony doesn’t seem to be growing well, test the pH of your tank, which should be around 10 when the spirulina is harvestable. If the pH is off, you may need to add more mineral “food. ” You can find pH test strips at aquarium supply stores or online.
