Treating Fungal Infections in Fish with King British Fin Rot and Fungus Control

Fin rot and fungal infections are sadly two conditions you are very likely to come across in the aquarium hobby. They are due to a combination of poor conditions weakening the fish and often some form of damage from fighting or transportation.
Just to point out - fin rot and and fungal infections are basically the same thing, the only aspect that changes is which part of the fish is affected !
My male German Blue Ram came with a fungal infection on his dorsal fin and so I'm treating him before it has a chance to spread.
Treatment took about 9 days in total and he is now on the road to recovery.
My favourite fishy stuff! (yes these are affiliate links :) )
Lights
Nicrew Classic LED - amzn.to/3fG3Uv6 - Traditional led light that's got a nice high output in a white/cool colour range. Makes plants look extra green.
Nicrew SKY - amzn.to/3Ktn45U - really nice light for natural looking tanks, also the one I use for filming.
Filters
Pat Mini - amzn.to/3fE1u0k - popular for a reason, just a superb little filter thats great for shrimp tanks and fish alike.
ASAP - amzn.to/3nBuytp - the old favourite and the one i return to most frequently.
Air Pump
AP-3 Kit : amzn.to/34UMA3q - Great little air pump, not a silent runner, but has been very reliable for me.
Tanks
Scaper 45 - amzn.to/3KBxG2H - a lovely high quality tank that comes with a super strong light, and a decent enough hang on back filter - perfect for newbies and scapers alike.
My filming stuff
Camera - Cannon 200D - amzn.to/354OLlc - nice camera, easy to use.
BigTripod - Manfrotto befree - amzn.to/3GLXDdj - pricey but super sturdy and can take being knocked over a lot by clumsy operators.
Lil' tripod - amzn.to/355WmQs - can't pronounce the name but it's been a good tripod for filming things on tables or when I have tanks on the floor.