is my heater bad for plants?

Talk about your fresh water plants here
Jack
Posts: 6
Joined: Thu Oct 10, 2024 3:25 pm

is my heater bad for plants?

Post by Jack »

I've got a 20 gallon planted tank with Java Fern and Anubias, but my plants seem to be struggling. The heater is set to 78°F, and I'm wondering if that's too warm for them. Anyone else run into this?
User avatar
flame
Posts: 5
Joined: Sat May 27, 2023 8:02 am

Re: is my heater bad for plants?

Post by flame »

78°F is generally fine for most tropical plants like Java Fern and Anubias. What's your lighting like? Low light plants can get stressed if the light's too intense, even if the temp is okay. Also, check for algae, that can mess with plant health.
User avatar
foxcape
Posts: 8
Joined: Sat Jun 08, 2024 12:53 am

Re: is my heater bad for plants?

Post by foxcape »

Yeah, 78°F shouldn't be the issue unless your heater's sketchy and spiking temps. What brand is it? I've had cheap heaters cook my plants before. Also, how often are you doing water changes? Stagnant water can be worse than a slightly high temp.
sealux
Posts: 3
Joined: Thu Oct 10, 2024 5:24 pm

Re: is my heater bad for plants?

Post by sealux »

foxcape wrote: Sat May 31, 2025 4:56 am Yeah, 78°F shouldn't be the issue unless your heater's sketchy and spiking temps. What brand is it? I've had cheap heaters cook my plants before. Also, how often are you doing water changes? Stagnant water can be worse than a slightly high temp.
Agreed. A reliable heater is key. I'd recommend a digital thermometer to double-check the temp. Sometimes the heater's dial is off by a few degrees.
User avatar
Sivaso
Posts: 4
Joined: Thu Oct 10, 2024 1:15 am

Re: is my heater bad for plants?

Post by Sivaso »

Bruh, my plants were wilting too till I realized my heater was busted. It was flickering temps between 75 and 82. Got a new one, plants perked right up. Check if yours is acting weird.
barkcode
Posts: 5
Joined: Sun Sep 18, 2022 4:15 pm

Re: is my heater bad for plants?

Post by barkcode »

What's your substrate situation? If it's just gravel, the roots might not be getting enough nutrients. Java Fern and Anubias are hardy, but they still need some love. Also, what's your CO2 like? Low CO2 can stunt growth even if the temp's fine.
Jack
Posts: 6
Joined: Thu Oct 10, 2024 3:25 pm

Re: is my heater bad for plants?

Post by Jack »

Thanks for the tips, everyone. I'll check the heater with a separate thermometer and look into the lighting. Appreciate the help!
User avatar
Freshlex
Posts: 1
Joined: Thu Oct 10, 2024 1:29 am

Re: is my heater bad for plants?

Post by Freshlex »

No prob, Jack. Also, if you're using liquid ferts, make sure you're not overdosing. Too much can cause algae, which'll choke out your plants. Been there, done that.
rubioux
Posts: 4
Joined: Thu Oct 10, 2024 10:01 pm

Re: is my heater bad for plants?

Post by rubioux »

Freshlex wrote: Sat May 31, 2025 9:47 am No prob, Jack. Also, if you're using liquid ferts, make sure you're not overdosing. Too much can cause algae, which'll choke out your plants. Been there, done that.
Yep, balance is key. I'd start with half the recommended dose and adjust from there.
FiShyPet
Posts: 2
Joined: Sun Jun 09, 2024 1:16 pm

Re: is my heater bad for plants?

Post by FiShyPet »

My two cents, check your water hardness too. Some plants don't do well in super hard water. If your tap's got a high GH, might wanna cut it with RO or distilled.
Post Reply