Honda CX 500 - Using electrolysis for rust removal inside fuel tank

Had a go with electrolysis as a method to remove rust from the inside of the fuel tank from one of my Honda CX500's. I have never used this method but have seen several people doing this.

CHAPTERS
00:00 : Start of the video
01:52 : Anode done, next step is the fluid
03:30 : Adding the acid
03:54 : Setting it all up
06:06 : 24 hours later
07:46 : 15 HOURS LATER
08:34 : 8 HOURS LATER
10:17 : 24 HOURS LATER
13:23 : 24 HOURS LATER
15:31 : AFTER ANOTHER 6 HOURS

With electrolysis you need a couple off things:

1. A (warm) fluid inside the tank with a high PH-value. I used stuff that is used in pools. The pack should say PH+ (not PH-). Baking soda is also an option. 500 gram per / 10 litre is was told.
2. Battery with a charger. 12v or 24v is enough. I believe that the amperge is more important then the voltage amount.
3. An anode. This is a sacrificial piece of bare metal. Make sure the anode does not come into contact with the tank (in- and outside).
4. Time. it will take a full day to get the result yo want. If all goes well the there should be foam coming out of the top of the tank. So make sure there is plenty of room around the tankhole.

Eventhough I did all these steps I did not get any result. Or a least no foam coming out of the tank. The rust may have come loose but I am not even sure about that.
In the end I had to resort to the method I know works for me which is with vinegar.
I use 3/4 vinegar and 1/4 water.
I leave that for 24 hours, shake it very hard with bolts, nuts and a chain inside to break the rust from the tank.
Then I flush the tank a couple off times with water, getting the last flakes of rust out. Drying i do with a cloth and a bendable metalrod.

When the tank is nice and dry i flood the inside with WD-40 which will prevent new rust from starting again.