Of course you can still use a fuge. They're great for all the same reasons Triton recommends in almost any methodology. Plus they provide a predator free nursery for pods and lots of beneficial worms and such. Small is better than none.
Make sure you have a good grow light. Your macro algae can't out compete GHA living under expensive lights in your display if it's living under a cheap florescent light bulb. Reach in and harvest about half of it when it starts to fill its chamber so it doesn't die and release nutrients back into the water.
Also be aware that rapidly growing macro algae, which is what you want, will deplete some of the same trace elements coral need to grow so if you leave Triton entirety, some other careful method of trace element replacement is necessary. I use Red Sea trace colors because they're tied to Ca use, which is easy to measure. Consistent water changes help slow the depletion but unless you are replacing all of it at once (DON'T) you're always falling behind.