Hi, I have a problem with low pressure in the hot water line. The Caño that feeds the hot water tank works perfectly and with good pressure, the issue is the hot water outlet, when I unscrewed at the outlet I realized that in the pipes there was How a layer all around inside tartar take out everything I could but I think it continues along. The house is 4 years old and the pipes are thermo fusion green. From the thermo tank Until the first tap that is that of the kitchen there are 10 meters and everything goes below the floor, the hot water in the faucets is scarce, that of the shower is so low the prices that drip and fall down the wall in instead of falling in the form of rain which makes it impossible to bathe and in the kitchen the same a thread of water. If someone could advise me to solve this problem please.