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auto top up


mopiko
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every float switch has different contact point and magnet built internally. some disconnect faster, some drag away for few mm before cut off. They varies too on amperage. Some 1 amp, some 2 amps,..... So depends how much your pump drawing current, which float switch is better reliability. Higher ampere rating float switch is better but as ampere rating is higher, the price will be higher and bulky too. Dont need to select so high ampere float switch as waste money.

For me, I prefer to diy myself. I will add a timer to prolong it so the water will go max to my required value. I will use a small little pump so flow is slow, can be control easily. I just dont like the pump on/off frequently within that float switch contact margin.

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I have a DIY float switch DC autotop up and the tunze one.

The tunze one is good very reliable. Use it for about two years already. It is very accurate to ablout 1-2mm.

Float switch tend to be somehwat more unreliable though my DIY version seems to be working ok I have change a few sets of float switches already. Accuracy seem to be about 5mm. I am using the tunze metering pump because it uses 9/12VDC and I can run the whole thing off a DC adapter.

I think the JBJ one is fine too. Try to use the smallest pump you can use.

The biggest headache is the reliability of the float switch mount. Avoid suction cups if possible.

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i think Tubby work best for me, 3 years liao and still working good. The price is somehow cheaper too.

i am also using Tubby . Great product

Humble tank :

Size: 4x2.5x2 ft - Display 

Equipment :

Return 1 : Ecotech marine L1

Return 2 : Ecotech marine M1

CR : Skimz CM122 - Caribsea extra course media with Grotech magnesium

Light : ATI 8x54W

 

 

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  • 1 month later...

I using JBJ for 2 years plus.So far no issue at all.

Very compact .Can just clip on the tank.

6.5 * 2 * 2 + 3.75 * 1.5 *1.5,(Decomn on 14/9/08)
4*2*2 + 2.5*1.25*1.25 (Decomn on 1/8/09)
5*2*2 (Fully LED light system, 140 3 watt SSC leds with 60 degree lens)(Decomm)
2.5*2*2(Fully LED Light System,96 3 watt SSC leds with 60 degree lens)(Decomm)

5*2.5*2(LED only)

Eheim return 1 * pump

1 HP Daikin compressor with cooling coil
2 Jebao OW40, 1 ecotech MP40,
1X6085 Tunze wm,

1 CURVE 7 Skimmer

  1 DIY 80 led control by Bluefish mini 

1 radion XR30W G2, 2 Radion XR15G3

Sump area lite by 5 ft T5 , 6 * SSC 3 watt red LED for refugium

1 Full spectrum E27 led light

1 CR control by bubble count

Start No Water Change since 1st Dec 2016

Add new 2.5x2x 1.5 ft 

 nLekOfpYts.jpg
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Tunze osmolator are the best regulator for water top up...

it's the best $$$ can buy... 1 of my unit is already 8yrs liao... no problems at all... but the metering pump for the topup has been changed 2 times in the last 8yrs... it's considered damn good as there's soo much back pressure from the 1 way check vavles and DI unit plus Kalk reactors....

just do it...100% satisfied..

cheers

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