350L (90Gal) Freshwater to saltwater conversion?

[MrWhippy619]

Hi Guys Im looking to convert my freshwater 350L tank into saltwater its currently running a fX6 filter its not drilled and doesn't really have much room for an appropriate sized sump. Will the FX6 good enough? or are there other types of filtration methods to use? please let me know your thoughts, also what size weekly water changes am i looking at? on my other tanks iv always done 10-15% but they were much smaller tanks but with my understanding a 10% should be good for this one too? please correct me if im wrong your help will be much appreciated

 

[Benjammin]

Canister filters can create nitrogen quickly. If you don’t want to use a sump there are protein skimmers that go in the tank like the tunze comline (prob need 2 for 90gal but there are most likely others).
water changes between 10-30% are normal. Frequency is up to your bio load, coral toxins and other factors.
Some good vids on YouTube about this.