Please critique my setup

[Xevlo_Milano]

I'm only starting with 3 plants; still early in the seedling phase. I've got some aquarium heaters lying around that should keep the water temps around 70.
Hopefully, I can move them into the tent around January 7th.

my plants are in a poorly insulated closet so it gets pretty cold in there, but it works out sometimes when I get heat problems from my lights, my plants were in the seedling stage not long ago but the past week they exploded in growth once the roots hit the water. Then I made sure the temp is good enough, ppm

I found keeping water temps at 66 provided a great environment for root health and growth

That is also the ideal temperature for my water, but my water is only 63 right now because it is colder in my grow room

 

[Budley Doright]

my plants are in a poorly insulated closet so it gets pretty cold in there, but it works out sometimes when I get heat problems from my lights, my plants were in the seedling stage not long ago but the past week they exploded in growth once the roots hit the water. Then I made sure the temp is good enough, ppm

That is also the ideal temperature for my water, but my water is only 63 right now because it is colder in my grow room

Probably a bit cold but mine have gotten and do get that low in refill and no issues that I can see.

 

[Xevlo_Milano]

Probably a bit cold but mine have gotten and do get that low in refill and no issues that I can see.

The water temp is cold for my set up but my plants are loving it because of the nutrients and the micronutrients and I pH balanced it.... also no issues at all so far

 

[Douglas.Curtis]

Is the filter on your intake light proof?

Simple to build a box with an intake take-off. Cut a giant hole in the box and fit a HEPA furnace filter to it. Can't stand dust/pollen/contaminates on my cannabis.