Ok when adding back do I mix up enough nutes for the amount adding back? And thanks I go to sleep thinking about growing wake up think about. Some one could be conversation about a death in the familiy I'll chime in I figured it out ... Something about growing ... Lol a real passion. Thanks for all the help
Haha I can relate to that, here is how i do it but there are a few ways that work.
I mix and adjust my nutes daily. Take a ppm reading of the water before adding anything back this will give you an indication of how much the plants are eating vs drinking and if you need to raise or lower the strength of your nutrient solution. When plants are small you will see little change as they get bigger you will see more change. If the ppm is slightly rising that's about where i like it. If its rising a fair bit you know you nutrients are to strong, if its dropping you know they are to weak.
Add water back to the system and give it 5 to 10 min to mix. Then take another ppm reading and this will show you exactly how much the plants are eating each day. This info is comes in handy because if the plants stop eating or are eating less you know there is a possible issue to start looking for.
After that i add nutes directly to the res and wait 5-10 min to check ppm and make sure it where i want it. For the first week or 2 you can probably just add water back and things won't change much and you wont need to add much water if at all. Its takes some practice to get an idea of how much nutes to add back but it doesn't take long until you will be pretty much able to do it blindfolded
If you were running an auto top off it would be different but that's how i do it
