DIY Auto TopOff - Super easy, Extreme Cost effective

**Shadow** · 16th Jul 2013, 16:59

Originally Posted by limz_777

float valves top-up will be still good for larger volume tanks , this method good for small tanks i guess

also you can cover the tank maybe can prolong the top up

Frequent top up normally required if you are using fan. You cannot use fan if you cover the tank, thus no top up require in the first place.

**limz_777** · 17th Jul 2013, 20:47

yes ,fan evaporation rate quite scary

, for my 7 gal i only on 8 hrs of fan , every week at least 2.5 l to top up

guess if going for holiday or business trips best to off the fan as well

**valentinoarmourdos** · 18th Jul 2013, 14:11

Awesome Idea... I was really thinking hard what to do about topping up of water when I'm overseas for more than 2 weeks...

**stormhawk** · 18th Jul 2013, 18:01

qngwn, I understand the concept, and this is a cost effective method for those with smaller tanks. I have a 4 footer with the cover usually on but when I do open it during hot days, the evaporation rate is insane. A typical 1.5 liter bottle with this modification would suit my purposes perfectly though I have to tweak it a little. The reference to float valves was something I was planning to do, with a reservoir below the tank but since this method is so much easier, I'd rather just go with it as a temporary solution.

**mikisol** · 18th Jul 2013, 21:14

I am so happy that the idea benefit so many people... you guys have any problem building this, let me know.....

**qngwn** · 22nd Jul 2013, 16:23

Originally Posted by stormhawk

qngwn, I understand the concept, and this is a cost effective method for those with smaller tanks. I have a 4 footer with the cover usually on but when I do open it during hot days, the evaporation rate is insane. A typical 1.5 liter bottle with this modification would suit my purposes perfectly though I have to tweak it a little. The reference to float valves was something I was planning to do, with a reservoir below the tank but since this method is so much easier, I'd rather just go with it as a temporary solution.

Can use a floating ball valve like those inside your toilet bowl kind, just connect them to the water source (tap) and leave it on.... and hope it does not leak/ burst

**Cashflo** · 15th Aug 2013, 14:11

Brilliant!

But does anyone know where i could get a tiny float valve?

**AQMS** · 15th Aug 2013, 15:38

Originally Posted by Cashflo

Brilliant!

But does anyone know where i could get a tiny float valve?

Float valve or float switch???

**Stevenlo81** · 15th Aug 2013, 15:39

Nice DIY will try it now

**Cashflo** · 15th Aug 2013, 15:55

Originally Posted by zerofighterx101

Float valve or float switch???

Float valve as i intend to top off with RO water from a limited storage tank.
I am thinking of a smaller version of the same mechanical gadget in your RO water storage tank. Non electrical. Any lobang?

**AQMS** · 15th Aug 2013, 16:15

Originally Posted by Cashflo

Float valve as i intend to top off with RO water from a limited storage tank.
I am thinking of a smaller version of the same mechanical gadget in your RO water storage tank. Non electrical. Any lobang?

oh i see, check ebay they use to have 1/2" 1/4" and 3/4'' float valve for small tank.
depend on how small you want it.