I have been using the water from a 135 gal FW plant tank for my orchids and plants on our deck. I just started an indoor grow in a 32" x 32" tent with a G8LED 240 light. My question is about using the water for the 4 clones I have in the tent. I used Empire Builder soil. Are there any nutrient deficiencies I need to look out for? The water I use in the tank starts out as RO/DI and is buffered so the I can use CO2 for the plants. I use Kents R/O Right to bring the hardness in the tank up to about 200. I have a bunch of fish, so the tank is well feed. I have about 25 gallons of water every 2 week from the water change, so I could water exclusively with the tank water. Or I could alternate with regular water. Would one way be better than the other? Thank you in advance for the help.