Reddit reviews Marina Submersible Heater for Aquarium, Mini, 25-watt

If you can manage a little over $35 I'd recommend this tank from [Amazon] ( https://www.amazon.com/dp/B00KIRR8BY/ref=cm_sw_r_cp_apa_oGiMzbMSHNNS5). After that some nice aquatic plants like an [Amazon sword] (http://www.aquariumcarebasics.com/aquarium-plants/amazon-sword-plant/) or [Anubias] (http://www.aquariumcarebasics.com/aquarium-plants/anubias-barteri/), bettas love broad leaves, and a heater. Finnley will be the happiest guy in town.

You might be able to order it online and pick it up at the store. Otherwise I'm struggling to find a kit that fits the budget that isn't completely crap quality.

You really want a 5g min for long-term care, but a 2.5g tank is a better alternative than a bowl. This heater is a good choice.

The 5g version of that tank would of course be much better, but I don't know what your friend can afford.

Make sure he gets some hides too - live plants ideally, but silk plants are fine too. No plastic plants!

I've been using one of these for my betta tank which is 2.5g and it's been fine for the past 6 months. I wouldn't say it's the best since it doesn't have any indication of the temperature you're changing it to, but if you take the time to monitor the temperature as you change it, it should be fine.
http://www.amazon.com/gp/aw/d/B00AFELT92/ref=mp_s_a_1_34?qid=1419625323&sr=8-34&pi=AC_SX110_SY165_QL70

Oh sure, they'll live miserably in their tiny bowl for about 2yrs. That's about how long it takes for them to die from cold + poor water quality. Thing is bettas can live for 5 to 8 years in the proper conditions.

1.5gal is actually fine if you have a heater and do a 100% water change every other day.

If you can't do anything else right now, do frequent water changes. Even if it's just 100% twice a week. And obviously use conditioner too.

2.5gal tank with lid: $15

Water conditioner: $10

25watt adjustable heater: $20

Coffee mug for a cave, and some uber cheap play sand & fake plants from a craft store. DONE. Merry christmas.

IF THERE IS 1 THING YOU SHOULD GET: A heater. Please just get an adjustable water heater.

Marina fluval 25watt heater, adjustable, submersible and only 11$

I personally like the adjustable heaters. I have this one in my 2.5g hospital tank and this one in my 5.5g main tank.

This heater has a thermostat and it's small https://www.amazon.com/gp/aw/d/B00AFELT92/ref=mp_s_a_1_1?ie=UTF8&qid=1497820886&sr=8-1&keywords=marina+25+watt+heater

No no no no no. Do not medicate with malachite green/formalin for tetras. It will kill them faster than the ich will. Just salt.

Salt to 1 tsp (teaspoon) per gallon of aquarium salt (buy it from a fish store, not table salt) and if the fish is valuable to you then you'll need to get an adjustible heater and crank it up to 86 degrees. If you can't get it to at least 85, don't even bother increasing the temperature or you'll only make the problem worse If you need something small, this is the smallest adjustable heater I've seen.

Here's a post I made a while back for another redditor that had an ich issue.

Mini Marina/Fluval 25w heaters work well for my 3 and 5 gallon shrimp tanks. Very reliable, too.

Almost any sponge filter will do, but most prefer the type that suction onto the side of the tank like a dual sponge filter. Even better, some have compartments for biological media like the Qanvee 100A or 200A. Another great option, and the best IMHO, is a Matten filter.

I'm thinking I'm gonna have to buy a heater for the 2.5g shrimp tank I'm also cycling, since the one I already had on hand is keeping it too warm. I'm probably going to go with this one.

says its up to 2.5g, so should be OK.

I prefer to get something thermostatically controlled though, so you cant cook your fish on accident.

this or this are the lowest wattage you'll find with a control. Eheim is a more reliable brand, but reviews are good for both.

I just picked up this heater for a 5.5 gallon betta tank and I'm really happy with it - [Link](http://www.Marina.com/ Submersible Heater for Aquarium, Mini, 25-watt https://www.amazon.com/dp/B00AFELT92?ref=yo_pop_ma_swf). I think it's worth the extra few $ so that you can fine tune the temperature.

I have this one and it works just fine.
https://www.amazon.com/dp/B00AFELT92/ref=cm_sw_r_cp_apa_Aq4CzbBKHAY07

I've had this one in my 2.5 gallon for the few months I've had the tank and haven't had any problems so far.

I'm looking for a small heater to replace a 10w I have. Are you talking about this one (https://www.amazon.com/Marina-Submersible-Heater-Aquarium-25-watt/dp/B00AFELT92)?

Here is the mobile version of your link

Anecdotal, but I have this 25w in my 5 gallon, set as high as it can go, and it barely keeps the water at 75 now that it's almost winter and the ambient room temp is lower. So yeah, I'd go with the 50w.

The cheap $2 glass thermometers work fine, imo.

I have 3 of these Marina adjustable 25w heaters, in tanks from 2.5 gal to 5 gal, and they are working fine.

He really needs a filter, you can probably find a tiny sponge filter which all it requires to run is an air pump (which you have) and it can still make bubbles for him! Bettas like jungles, I suggested live plants because they help with the water quality. You need to fish-in cycle the tank, the airstone is okay but you really need a filter to circulate the water through. When the tank is cycled the filter will have enough beneficial bacteria to convert ammonia created by fish into nitrite (also toxic) then into a safer chemical nitrate which is less toxic in larger quantities but we want to keep it below 20.

Heaters:

Tetra HT Submersible Aquarium Heater With Electronic Thermostat https://www.amazon.com/dp/B000OQO69Q/ref=cm_sw_r_cp_api_i_-FRNDbBWFSS7A


Marina Submersible Heater for Aquarium, Mini, 25-watt https://www.amazon.com/dp/B00AFELT92/ref=cm_sw_r_cp_api_i_gJRNDb8MRN195


Hydor 25W Submersible Glass Aquarium Heater - Original Theo https://www.amazon.com/dp/B0006JLPG8/ref=cm_sw_r_cp_api_i_NKRNDbH01Y034

Maybe this filter would fit? It shows dimensions but idk what your tank is like - it would go in the corner -

SLSON Aquarium Sponge Filter Corner Filter Biochemical Cotton Fine Filtering for Fish Tank up to 21 Gallons https://www.amazon.com/dp/B07PF7T1QZ/ref=cm_sw_r_cp_api_i_BMRNDbDEQF4GE

This is also super important-

API Freshwater Master Test Kit 800-Test Freshwater Aquarium Water master Test Kit https://www.amazon.com/dp/B000255NCI/ref=cm_sw_r_cp_api_i_iNRNDbAPV8KBQ

Heres a link to prime:


Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 100 ml https://www.amazon.com/dp/B000255PFI/ref=cm_sw_r_cp_api_i_HNRNDbDRHJ1G1

I have this heater for my 2.5gal. The heater is only 6in long, is adjustable, and would definitely fit in your tank, either stuck on the side or resting on the bottom.

I have found that the small circular pad heaters or "slim heaters" don't heat as well. They also aren't adjustable. If you bought the Marina Mini it turns on/off automatically based on the temp you set it at.

Make sure to buy a thermometer and let your heater get to room temp after it arrives. Look up "calibrating aquarium heater," it's basically waiting until it's the same temp as it's surroundings so it can use that as a base temp. Then you put in the filled tank and change the temp by adjusting the knob. Don't turn it up to 80 all at once. Turn the dial a little bit every few hours so Spirit acclimates to the new temp.

I love Spirit's coloring! And he's made such a big bubble nest, so cute.

Oh also FYI bettas don't need aeration. They have a labyrinth organ!

And you need to turn off the light at night (just cause you said "always provided")

If you get sick of hornwort (they can get messy) try getting an anubias.

Props to following the care guide.

Yep, I completely get that. The sponge filter and pump to run it would be >=15$ on Amazon (the links are from Amazon), and would be a huge improvement.

This looks like a pretty solid heater, and is adjustable which is far better than a preset one. Don't bother buying one in store; they're always crazy overpriced

Marina Submersible Heater for Aquarium, Mini, 25-watt
https://www.amazon.com/dp/B00AFELT92/ref=cm_sw_r_cp_apa_gdINybA93N2VN

Also 15$

Don't depend on plants to filter your tank. It's very difficult to have enough plants to be able to use up all of the fish's waste, especially in such a small tank. It would also be very expensive to get the proper light, substrate, and fertilizer for a heavily planted tank light that

Java ferns are great for bettas, but make sure to keep the roots above the substrate. Mine loves sleeping both on the leaves and in the roots of his.

So this one would be good for my set up? I will need to see if my tank is tall enough. Marina Submersible Heater for Aquarium, Mini, 25-watt https://www.amazon.com/dp/B00AFELT92/ref=cm_sw_r_cp_apa_qF21AbAKT0S6H

I use this in my standard-size 2.5g. It's just baarely short enough to fit when the bottom tip's dug into the substrate. But your tank looks taller than mine.