The SEUS Renewed water shaders don't work with fluidlogged API installed, though this is fixed with SEUS PTGI. I prefer SEUS Renewed, as it is more faithful to the parasites modpack by forgelabs.

Steps to reproduce the behavior:

1. Install Fluidlogged API and OptiFine.
2. Install and apply SEUS Renewed 1.0.1, or E1.
3. Look at water in-game.

Expected behavior:
For both the shaders and the API to work correctly.

Additional context:
Forge 14.23.5.2859 or 2860, MC version 1.12.2. OptiFine version HD_U_G5. Fluidlogged API, latest release on modrinth.

To get around this temporarily, you can manually edit the gbuffers_water.vsh files in the shader. Do a find/replace for mc_Entity.y == 1 and replace it with mc_Entity.x == 8 || mc_Entity.x == 9