Keeping a reservoir warm?

[Bulls]

We know what a challenge it is to keep feed solution at the right temperature. Especially the ones growing in coco and mixing big amounts of feed at once.

As my grow is entirely in the loft, my feed solution gets too cold in winter. And we need it about 18/19 degrees.

What is the best and cheapest way of keeping it at the right temperature or at least warming it quick right before feed?

I am usually using an aquarium heater, but that's another 300w of leccy for at least 3 hours to warm up a 100L.

A bottle of boiling water in the res also helps sometimes, but only changes temps with about 2 max 3 degrees.

Having the feed at the righr temperature is very important and also pH and EC pens show different values at different temps.

I'd like to hear your opinions!

[Captain Beefheart]

fishtank heater dangling in the res job done........ thermostatic type

[Nanook]

Use nutrient tank warmers... Like fish tank ones. Leave on all the time. I also use a mix of hot and cold to fill initially.

[Captain Beefheart]

oooops my bad i see ewe use heater......well apart from mix it fresh every day from, hot + cold taps like i do......your shafted.

[Captain Beefheart]

i always water my dope with tepid water / luke warm around 22....it stops the shock if watered with colder water it stresses the dope imho.

[GMO]

Lurking for a budget solution too

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[Nanook]

You do realise an air bubbler also heats a Res aye?

[Bulls]

You do realise an air bubbler also heats a Res aye?

I've got 3 airstones in my reservoir mate and it's nowhere near the term WARM haha. It was 12 degrees last night! Had to WASTE some leccy to warm it up. I need a solution!

[Nanook]

Try insulation?

[GMO]

So you probably already got this part covered, but I had loads and loads of bubble wrap which I have used to insulate my rez. Its not in use currently but will report back

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