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Wendy2244
Anne4851
There are some thoughts about carbon dioxide in the air and its interaction with Ca and Mg ions... but. In the foamers, the aeration is so intense that it's unbelievable, and the pH in aquariums doesn't drop that much.
Rachel9060
81 views - and not a single thought?
Helen
The speed of water mixing also affects the pH when preparing water. For water changes in my aquarium, I prepare 30 liters of water, two buckets of 15 liters each, and the water is prepared for about 12 hours, using osmosis plus resin, with TDS less than 3. In one bucket, I mix the water with a pump rated at 3000 liters/hour, and in the other, a pump rated at 5000 liters/hour. In the bucket with the 5000 liters/hour pump, the pH value is always one to two tenths higher (depending on the salt). This effect was observed with Tetra salts, Aquarium Systems Instant Ocean, and Aquarium Systems Reef Crystals.
Brenda
Due to more intense mixing, the water is better enriched with oxygen. That's why the pH is slightly higher.
Leonard
Here, all conditions are the same. Even the shape of the container. TDS is less than 1. One device is used. The temperature is within 1 degree Celsius. The effect is present in all 8 brands of salts, but these three are the most pronounced.
Cassandra1840
When sodium bicarbonate dissolves, dissociation occurs according to the following equations:
NaHCO3 = Na+ + HCO3-
HCO3- = H+ + CO3--
The decomposition of the bicarbonate ion decreases pK
The formation of H+ ions lowers the pH
This will continue until the dissociation constant is reached.