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Blind calcium supplementation may lead to high blood calcium, kidney stones, nutritional imbalance of mineral elements, even heart disease, prostate cancer, etc., and must be stopped. There are three factors to consider calcium deficiency. Clinical examination shows calcium or vitamin D deficiency indication (such as low bone density, high alkaline phosphatase, high calcium phosphorus product); The concentration of vitamin D in blood was normal; Low calcium intake (e.g. <3/4 recommended).
Before discussing battery maintenance, please make sure that your battery is, in fact, the sealed type. If it isn't, then this "maintenance free" label certainly does not apply and you may should add water regularly. Unsealed batteries are really simple to spot since they have small vent caps together with the battery which may be twisted open. You will need to periodically add sterilized water to keep up water levels; way more during the summer time months as water is likely to evaporate quicker. Do not let your battery run low or exhaust water as it's cells could be ruined.
Reverse flushing can be done automatically: the backwash is done by hydraulic valve opening and hydraulic cylinder pistons, which are controlled by the backwash controller. The anti-flushing controller can accurately control the hydraulic valve and hydraulic cylinder according to the differential pressure value from the filter inlet and outlet, and the power of the controller comes from the pressure of the line itself.
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