I had just started college and could not manage settling in and developing the mod at the same time. Thankfully, I now have a more optimized schedule and I can put time back into this passion project of mine. Anyways, this is a small update for now just to tell you guys that this mod isn't dead and to fix some issues I've found and been told. If you find any more send it to the Github page or directly to me on Discord.
With the new nitrogen waste system in place, I've found that using plants alone to balance nitrogen levels in small confined environments like aquariums can become nightmarish. On one hand, stocking your tanks still needs to be challenging and play into the semi-realism of the nitrogen cycle. On the other, if you wanted to keep a few fish alive you'd need to fill your tank to the brim with plants or make the space impractically large.
Which is why the filter block helps solve those two problems. It has a singular function, all entities within 6 blocks of the filter and within the same water body have their nitrogen values transferred to the block by 100 per tick. The waste is stored inside the block (up to a maximum of 100000) and has a visual meter on the side that shows its level. You can also right-click it just like the nitrogen detector to get an exact value sent to you. Once it's completely full, it stops draining from nearby entities and makes an alarm sound.
To clean the filter, use a sponge block on it and it will reset back to 0 while consuming the sponge block and dropping a single mulm block.
The nitrogen waste sharing between the filter block and entities with themselves can be very performance intensive with its flood-fill algorithm. It's been changed to a combination of AABB and flood-fill to make the scans more compact and allow greater accuracy for each scan. This is also noticeable when it comes to performance as it allows almost twice the amount of entities before any noticeable lag happens.

Fish and Bizz adds a variety of aquarium fish among other creatures. Simulate the fishkeeping experience by breeding your fish, all the while trying to balance everything else to keep them alive. In Beta due to overhauls and experimental features