Bro, r u gg for FOWLR or reef tank?
1)SG @ 1.026 is consider high for fishes..try gg for 1.016-1.020 1st..to increase gradually to 1.023-1.025 if gg for reef later on..try to compare different water SG from different source to know if ur device is accurate..
2)try to do 50-70% wc with nsw..dose bacteria (I recommend mb7)..follow the mb7 dosing instruction..no need put carbon & stuffs..put bio-media like ceramic rings, BactKing, marinepure, biohomme, etc..cycle for a week can add livestock..
I m a woodlander & can help if u want..wish u success soon..cheers