Coral reefer’s 360 gal system. 225 display and frag tanks

[MarAquatic]

I'd just get a generator for heaters

Yup I agree that way you can also keep your fridge going

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[Coral reefer]

Yup I agree that way you can also keep your fridge going

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Corals > people food

 

[Coral reefer]

I'd just get a generator for heaters

That would be nice to have one setup to auto start, but I’m looking for battery solution right now. Really would like a power wall gosh darn it!

 

[EBJ]

That would be nice to have one setup to auto start, but I’m looking for battery solution right now. Really would like a power wall gosh darn it!

Or just get someone to turn it on if you're on vacation.

 

[Coral reefer]

Or just get someone to turn it on if you're on vacation.

And I wouldn’t know the power was out

 

[EBJ]

And I wouldn’t know the power was out

Apex!

 

[Coral reefer]

Apex!

No

 

[RandyC]

And I wouldn’t know the power was out

Never used any of them, but power outage devices exist.

Like this one:

Power Failure Detector with Text Message and Email Alerts https://smile.amazon.com/dp/B089QQNKJL/ref=cm_sw_r_cp_api_glc_fabc_rk8aGbMG0N10Q

 

[Meshmez]

You would have to have massive batteries to run heaters for multiple days. Most pumps are much easier. But still, multi day battery backup would be pretty big. Or you need fancy batteries like the tesla powerwall.

I have been thinking of getting something. Powerwall would be i think 10-15k haven't looked into auto start natural gas generators yet.

 

[Coral reefer]

You would have to have massive batteries to run heaters for multiple days. Most pumps are much easier. But still, multi day battery backup would be pretty big. Or you need fancy batteries like the tesla powerwall.

I have been thinking of getting something. Powerwall would be i think 10-15k haven't looked into auto start natural gas generators yet.

To run a 300 watt heater 2 days would be 130 ish amp hours. Not crazy big, but yes, a lot bigger than the 18 the ecotech ones have. Powerwall would be sweet for sure. Jealous of @JVU a bit

 

[Squist]

I have been thinking of getting something. Powerwall would be i think 10-15k haven't looked into auto start natural gas generators yet.

Price has got to come down soon. And/Or incentives like cars.

 

[EBJ]

I'd rather have the natural gas generator vs powerwall

 

[Coral reefer]

I'd rather have the natural gas generator vs powerwall

You should update your journal

 

[Meshmez]

I'd rather have the natural gas generator vs powerwall

Thats kinda what I'm thinking too

 

[EBJ]

You could try this. Then you'd only have to power a pump/solenoid. Just don't do the open loop discussed at the beginning of the thread.

Hotwater Closed Loop to heat big tanks - Reef Central Online Community

Hotwater Closed Loop to heat big tanks Do It Yourself

www.reefcentral.com

 

[Coral reefer]

You could try this. Then you'd only have to power pump/solenoid

Hotwater Closed Loop to heat big tanks - Reef Central Online Community

Hotwater Closed Loop to heat big tanks Do It Yourself

www.reefcentral.com

ASsuming there is still natural gas
I am looking for BATTERY options.

 

[EBJ]

ASsuming there is still natural gas
I am looking for BATTERY options.

You're gonna need some expensive batteries to run heaters for 2 days. Did you convert the AC amps to DC?

 

[Adit0]

a couple cheap low efficiency ac pumps could serve dual purpose as oxygenation + heat if you need to use battery power

 

[Corallus]

@BleepBloopMunchMunch told me about this. Haven‘t pulled the trigger yet, but may before summer hits.
Was thinking it would be good for pumps, ato and maybe skimmer. Seems the power goes out more often when it’s warm, so was thinking less about heaters and lights.

 

[rygh]

To run a 300 watt heater 2 days would be 130 ish amp hours. Not crazy big, but yes, a lot bigger than the 18 the ecotech ones have. Powerwall would be sweet for sure. Jealous of @JVU a bit

That is 130 Ah at 120V, so technically correct, but misleading.
Better is to say it needs 14 KWh.

A tesla powerwall 2 is 13 KWh, so close enough.
That is about $7,000.
But you also need quite a bit of extra equipment, plus installation.
So you are looking closer to $12,000.

Going DIY:
A standard good LiFePO4 battery, like I added to my camper, is 100Ah at 12V, at about $700.
You would need 12 of those to run that heater for 2 days.
Plus a simple inverter/charger.
So around $9,000.

Alternatives:
1) Solar hot water heater.
Solar heating panels + large hot water tank.
You store energy as very hot water in an insulated tank, not electricity in batteries.
Harder to control, but WAY cheaper.
2) Gas heater
Small on demand heater.
3) Generator

Note that #1 and #2 would need battery backup also, but only for controls and pumps, not heat.