Yeah. I painted some food storage buckets I found black to block the light better. I didn't paint the coffee jugs but they must be dark enough because no algae grew.im running a sm\ll 5ltr kratkey too. nut mines under natural lightat presant which is in flowering well autam now. so not ideal.
i tried 2 tomatoes this summer and 5 gooseburt and raspberys. the tomatoes failed miserably and the rest are still alive. but i got alge build up. the plastic water bucketass went light proof enough.
so ive got a 4 galon black bucket to try indoors this winter.
ill be growing a black domina cbd strain from sensi seeds
looking verry healthy kudoes for the kratxky