I noticed that the stainless steel tank always has a bigger capacity compared to the fiberglass or polytank. Which is better between the two? In terms of longevity and maintenance.

This post has been edited by mystvearn: Oct 15 2016, 12:01 AM

Opps. My bad. I see few neighbours use stainless steel tanks for capacity above 1000l. For poly, usually 300l

So poly as good as stainless steel?

One of my neighbours made this system with the SS tank. Not sure if poly have or not the inlets for it.

The 1125l SS tank is curved at the top and bottom has 2 inlets at the top, and 3 inlets at the bottom.

The very bottom of the curve inlet is used to drain the air karat
The other two bottom inlets slightly higher used for water in and water out

He placed two floatation switches/balls in the tank. One halfway, one at the top.
Water comes in from below.
When the water pressure is low, the water fill the tank up to the first ball. When the ball closes, the water will travel up to the second inlet. When the water pressure is higher at night, the water travels up and fills the whole tank.

Can do this setup with poly tank?

Where I stay, water pressure is quite low. Got worse since more shops built on the main road.

If I open the main tap at the meter, put hose and raise hose above 5 foot, water does not flow. Sometimes only air in pipe and water does not go to tank. Need to bleed at main pipe remove air then water will go in. It used to be that the water pressure is high enough that it can fill the top tank at night. Now very rare.,some neighbours resort to opening the tap at 3 am just to send more water to tank

Sometimes a lot sometimes less. I take a bath with gayung and big kolah. So that kolah in my toilet as big as the 300L tank outside house. Shower tak syok mandi.

Thanks for the suggestion.

I see. Thanks

Where I am in kota bharu, this is the norm. Meter>water tank>pump>filter>second water tank at rear>pump>roof water tank.

When I have first stayed here like 30 years ago, pipe meter straight to roof. No need pump. Then due to more economic activity, need to add rear tank and pump. Then when water become even low pressure put another tank at the front.

Front 250 galon
Rear 200
Roof 150
Original roof 100

My next door neighbour go even further, 500 g at meter followed by pump to 150 rear. Then 150 top. TBH, his setup is a bit between because got extra reserve. And when got disruption still maintain water. Even though the main underground pipe has to pass my house first.

You have to make it next to the meter, if you want the pressure to go into the tank. If possible build slightly underground then go ahead. If not need to choose between wide or tall tank depending on your house area. Tall tank, less space but more pressures needed. Wide tank more than spacey less pressure.

If sediment, use water jet to suck out or remove from pipe below. Wall, no choice but to scrub when empty

I thought got cap at top? Maybe different version