R/O Unit putting out faster

I've had my R/O unit 4 months. In the beginning it took 7 1/2 - 8 hours to make enough water for water changes. Then it took about 6 hours then it took 5 1/2 hours and now it is getting done in 5 hours.

Is this normal? Does the process normally speed up like that? Should I be concerned about a hole in the membrane or something?

I'm making about 30 gallons of water every 10-12 days for my 100 gallon tank water changes.

 

Sounds unusual to me.

 

it should make water quicker in the Summer months, if I'm not mistaken due to the warmer water temp.

 

Agreed,warmer water will have that effect on it,mine does the same.

 

Several things affect the GPD output. Water temperature and water pressure are the two big ones with tap water TDS and waste ratio being two others.
In summer months your water may be warmer which increase flow due to the water being less viscous thus passing through them membrane better.
One drawback though is warmer water increase the final TDS, colder water actually gives you better quality since it does not flow as readily through the membrane being more viscous or thicker.

What you are seeing is normal.

 

+1 as long as the final readings are ok you don't have to worry

 

I had a small flood and a perterbed wife last week because of not taking into account the faster water production rates in the summer . . . looks like its time to put a float valve at the top of my R/O container to avoid future overflows (and arguments).

~Will.

 

hey it looks like most of you use ro/di units I do not have one and was wondering if tap water conditionr is good enough i use it on top off water changes i have a 90 gallon fowlr so really how important is. and how does it compare to tap water conditioner

 

It's pretty important to use at least RO when running FOWLR. When using conditioner, the only thing you're removing is chlorine and chloramines. That leaves you with every single other contaminant left in the water, including copper (problem if you have any inverts, or ever decide to add any corals), nitrates and phosphates.

 

Thanks man this deffinately helped because for one Im low on cash but a ro unit will be on my list in the future and my fish wholesaler sells ro water any idea on how i could keep it in a hold does it have to be circulated lighted ect.) And also I do have high levels of copper guess thats why i could never keep anemones