- Bill W. wrote about Grässlin Rondomatic 400 in 2015:
I bought this feeder back in May of 2015. I could not find it in the US and bought it from this web site. The sales person was reluctant to sell it to me because of the voltage differences between Europe and the USA but I told the sales person that I could convert the voltage. I bought a Goldsource STU-200 Step Up/Down voltage transformer on Amazon for about $18 and that's how I power the Rondomatic 400.
I set it all up and watched it in action before in lieu of going on vacation. What I found was that it was gaining about 12 minutes per hour. It must be getting its timing signal from the 50 Hz whereas we use 60 Hz in the US. The math works out, anyway. No problem! I put an appliance timer on the voltage transformer and turn it off at 03:00 AM and turn it back on at 07:00 AM, which syncs everything back up.
The other issue I had to deal with is that the humidity coming off of my tank was causing the food to cake in the feeder. I solved that problem by buying a Thermaltake M...
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The automatic fish feeder Grässlin Rondomatic 400 guarantees reliable feeding of your ornamental fish even during your absence. The device can be used with all aquaria. 2 differnet installation methods are possible with the securing bracket and the screw contained in the packaging.