Really... My fish somehow manage to survive in RO for say more than 4 years now... hmmm.... sure or not..... as I remember all Sea Aquarium need RO filtration so your statement very fishy!!! really... I have 2 Aquarium 1 on shrimp (Japanese Shrimp) very delicate fresh water shrimp and it survive using RO and another one mainly for my Normal 4 ft tank also on RO water...

RO offer the purest water minus the negativity of boiling water cause boiling water reduce oxygen inside water... also RO is not the same as distilled water cause distilled water is DEAD water... wile RO water is pure water without mineral but high oxygen...
Don't say Fish cant survive in RO water cause in Aquarist RO is the best water for fish...

opps I was referring to Fresh water fish eg Gold fish and the filtration.Because Fresh water fish need a balance nutrient in the water hence too clean water they will get sick.

Yes 2 to 2.5bar pressure is just nice but after going through membrane filter it will drop approximately 1 bar. As mentioned, i do my own research and share it online. Have a look at this

You are refering to the old skool RO filtration... the newer filtration that I have already solve the fundamental nutrient thing... the new R.O has post filter which is mineral stone and nutrient cartridge and this is where clean (un polluted) nutrient is added back to R.O. pure water... thats why my fresh water fish tank (the 4ft ones) can survive under it... also fish need clean water (un polluted water) as it is their life under clean stream... no one want to stay in heavy polluted industrial zone Air... even human prefer clean un-polluted air... same with fish they are less stress...

back to RO... I will recommend to get the one with Post filter cartridge which put back all the mineral and nutrient that been filted away by R-O system... it works and it clean...

Let me try answer the question you raised o. The ro
(I choose to answer later because I want to see how the water expert answer )

My humble 2 cents.

RO water is good for aquarium, salt or fresh. Only when changing partial water because is stable, and mineral will not be gone because there still 2/3 or old water and the bio balls.

I use Amway filter water for my shrimps, planted, and guppy tanks.heat and Lighting is also challenge.

One question for 3M AP902 + prefilter users, how much impact does it have on the water pressure? I'm asking because my area has relatively low water pressure. I suppose, it would be more impact than a sand filter.

Pls complaint to Syabas if your housing Less than 2 bar because your water pressure cannot/Slow fill the tanngki in your Double storey hse unless your developer know the pressure  hence your hse should equip with 400gal tangki. If water too murky/Dirty No stand alone system  can solve this problem. You will need to buy chemical to input to the raw murky/dirty water. The clean water then can goes to sand filter and joint up 3M or membrane or directly to POU. I have been doing alot underground water Project for multi national company as  water is essential for site especially Construction.Quary,and so on. Domestic syabas water are treated and Underground are not treated at all Hence if Domestic water cut Pls shut off the main tap at meter area

It's only 25psi, about 1.7 bars. Complained before, they said it's old housing area, so if the pressure is too high, old pipes will start to leak

Since it is only 1.7bar hence I propose you use sand filter and follow by PP Filter. By the way most probably your hse Piping is GI hence Due to corrosion the water volume and pressure is being reduce <3bar---> 1.7bar. You need to relay new Piping in order to enjoy filtered water. I can calculate the composition media volume and specification to fit your house Syabas incoming 1.7 bar as we always  implement for Underground water projects also.

Er.. my pipings are brand new. It's 1.7 bar at entry point. I am using sand filter now, it just does not filter as clean as membrane.

This show that the membrane is being clog >50% looking at the water so Dark.

How long have you use the sand filter  and under what brand ? Generally Sand filter need to change sand every 3 yrs to maintain the quality filtered water. Sand filter Can filter up to 5 Micron and Ultrafiltration can filter up to 0.01micron. Generally Ultrafiltration filtered water able Protect your Washing Machine, Water heater, WC and Many More. As for Sand filter yes not as clean as Ultrafiltration  but better than no filter at all. You can see POU ceramic catridges get slightly dirty after 1~2 month compare ultrafiltration POU ceramic catridges nominal dirty after >3yrs .

FYI, that water is tap water mix with a little INK, so it is impossible for it to clog the filter 50%. This demo shows how good the UF filtration but at the expense of reducing water pressure. How often we get water as dirty as this?

Now from your explanation, seems like UF is more troublesome, nd flushing twice a day, nd backwash and after sometimes nd to change the membrane.

Hi all, just found out about this very informative thread. My neighborhood in kampung / village area get their water supply directly from pipes connected to the river up on the hills. i was wondering if there is any proper water filtration setup or product that is suitable for this. Any advice is very much appreciated. Thanks in advance guys.

What is A Ceramic Filter and How it Works

The ceramic water filter is made of porous clay and has a coating of colloidal silver solution. Ceramic water filters strain the dirt and bacteria out of the water as it passes through the pores of the ceramic filter pot and kill bacteria as it comes into contact with the colloidal silver.

In creating ceramic water filters, ground rice husks (or other organic material) are added to the clay mixture. The rice husks burn out in the high temperatures of the kiln, creating thin clay walls with cavities in between. These thinner clay walls increase the speed that the water moves through the filter, while still requiring water to pass between clay particles and therefore still removing dirt and pathogens.

Silver also kills bacteria. It is used on airplanes, by NASA in space, and in hospitals as a disinfectant. The silver solution in ceramic water filters is very important in killing bacteria. Laterite, also added to the clay has a high amount of iron oxide in it. The iron has a positive charge when in the filter and seems to hold onto viruses which have a negative charge (like a magnet that holds onto metal). This can help remove viruses from the water. Be aware ceramic filters do not eliminate chemical contaminants that could be in some source water.

The ceramic filter pot is set in a plastic receptacle tank with a plastic lid and a spigot (or tap). The ceramic filter pot is manually filled with 10 liters of source water. The water is purified as it seeps through the ceramic filter pot at a rate of approximately 2 liters per hour. The plastic receptacle combined with ceramic filter pot can store up to 35 L of water. [Read more]