My First Grow - Is This Normal?

[Mark30g]

Well tbh my friend I'd prefer to have it Lee's on my back and pay less electric but without having to sacrifice having more lights/hoods.

H temps we have touched on this before and noticed it @ 14C' reservoir temps and will need it between 18-21C' (I think).
Ph has been between 5.8ph & 6.1ph never over or under but like I said the yellowing on young leaves like ph isue? So making sure it's all under check.

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Reservoir change's so once I've cleaned the reservoir anr fills it who fresh water and nutrient's and the water level dropping sooner than the 10-14day mark now do I continue with a reservoir change? As his arms he most logical thing to do considering the ph isue which is now doing my box in once again lol.

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[Mark30g]

Obviously I'm doing all that's right owith Ph and Ec but realize that my nutrient temps need to be raised a lot higher than 14c and also my night time temps are now really low like 13C-14c so the question I need to ask is?
Will raising my night time ambient GR temps with a heater (say 5-10mins each hour???) will this help keep my reservoir temps up? Or will I still need to buy a water heater???

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