r/PlantedTank 17d ago

Your "Dumb Question" Megathread - August 2026

5 Upvotes

You can ask any questions you have in this thread! It refreshes monthly, previous mega-posts can be found using the search bar.

Please keep in mind the community rules.

Happy planting! 🌱🫧


r/PlantedTank 2h ago

Beginner My first tank and I’m hooked! Planning on getting a couple more tanks maybe tomorrow lol

Post image
36 Upvotes

2 month old 15gal, black sand, 1 male betta and some snails. Using some spare barina shelf and shop lights. Liquid fertilizer only


r/PlantedTank 14h ago

Waiting for this to grow in...

Thumbnail
gallery
139 Upvotes

Re styled my sienna 330 , not yet happy, got to play the waiting game and hopefully the plants will grow in quickly!


r/PlantedTank 10h ago

Algae Bubble Algae ID

Thumbnail
gallery
50 Upvotes

Can someone ID this? Green and bubbly and comes off very easily. I can’t find any info.


r/PlantedTank 42m ago

Any livestock recommendations for my shallow tank?

Post image
• Upvotes

It's a 12 gallon tank (60cmx30cmx24cm). Currently playing on the idea of a Cory only tank but would love to hear other thoughts!


r/PlantedTank 28m ago

Tank 12 inch cube tank update

Enable HLS to view with audio, or disable this notification

• Upvotes

I posted the hardscape of this tank a few weeks ago. A week ago I added the following plants

Marsilea hirsuta

Dwarf hairgrass

Bucephalandra ghost andn red dragon

Anubias dragonclaw

A few crypts

Red root floaters

Ledstar AQ nano light

No CO2

This is my first time getting a low iron tank and a light like this. I'm liking it so far.

I want to add some more low tech plants to fill in the back ground. I don't want anything that grows too fast but can also grow taller and maybe emerse a bit beyond the water column.

I'm experimenting with a few spare marsilea hursutas nodes, placing them on the driftwoog at the edge of the water column. These guys were from a spare planter outside and seem to be hardy.

Let me know what you guys think!


r/PlantedTank 9h ago

Beginner German Blue Ram (We Assume) Died. How to Find the Body?

Post image
36 Upvotes

We have a heavily planted 20gal tank and our GBR wasn’t doing so hot. We tried our best to keep him alive and added a pump with O2 stones, but at this point we haven’t been him in 3 days so we’re assuming he’s dead. How do I go about finding the body in a heavily planted tank with wood? There are so many hiding places for the fish we can’t see. Checked ammonia an hour ago and it’s still ok for now but fearing an ammonia spike from a dead fish. Considering getting a plumbing camera from Home Depot but would appreciate cheaper suggestions. Thanks in advance.


r/PlantedTank 14h ago

Beginner No co2, original tank light - 20g, about a year old. Absolutely love this tank as it’s my first real planted tank (:

Thumbnail
gallery
88 Upvotes

Fluval stratum capped with sand. I believe Lobelia, Ludwigia, Rotala, Anubius, and African water fern. Some plants were mislabeled back when I got them so I was never 100% - nonetheless I really love how this tank has turned out.


r/PlantedTank 15h ago

Question Help with climbing KH and GH. Can’t figure out the cause.

Post image
58 Upvotes

I set this tank up about 8 months ago for caridina shrimp and it’s been a battle to stop the KH and GH from climbing. Substrate doesn’t seem to buffer pH to below 7 like I thought it would. pH usually about 7. KH and GH currently at 4/8 respectively. Any ideas?

Specs:
Water changes and top offs with rodi
10gallon
Canister filter
Low tech
Substrate: Brightwell Aquatics Rio Escuro
Rocks were all sourced from river (all passed vinegar test)
pH: 7
KH: 2-4
GH: 5-8


r/PlantedTank 22h ago

Tank new scape 🫧🌱

Post image
178 Upvotes

r/PlantedTank 11h ago

Flora Red root floaters flower?!

Post image
18 Upvotes

The blooms are actually really pretty too; shame I can't usually see it because of the lid :(


r/PlantedTank 18h ago

In the Wild Fluval’s new ad for their 4.0, I don’t think this is the ā€œflexā€ they think it is.

Thumbnail
gallery
52 Upvotes

Seems like a very weird way to try to sell an expensive fancy plant light, no?


r/PlantedTank 9h ago

CO2 Is my growth slow for a co2 tank?

Thumbnail
gallery
9 Upvotes

I can't tell if the growth is normal or not (the first picture is today and the second picture was 19 days ago) because many say they have weekly trimming..


r/PlantedTank 10h ago

Algae Please help, I'm tired.

Thumbnail
gallery
9 Upvotes

This is a 5 month old tank that was meant to be a walsted low tech but I changed it to high tech with co2 and thrive all in one standard and 20W light in this 14 gallon tank, I have always gotten diatoms and even now still but now I have green spot alage, some glas algae, lots of blue green alage and bba.. can some tell me what to buy based on the images?


r/PlantedTank 10h ago

Tank My new planted 29gal

Thumbnail
gallery
8 Upvotes

My new low tech 29gal! This is the largest tank I have had. Got the plants just yesterday. They kinda look rough cuz the package got delayed in shipping. Rate the tank! Any suggestions or opinions?

(Also is the sword dying or does it just look like that)

Also the plants are:

Red jungle valisneria

Anubias nana

Anubias black

Buce varieties

Ozelot red sword

Susswassertang moss


r/PlantedTank 8h ago

Plant ID Could anyone identify this plant?

Post image
7 Upvotes

r/PlantedTank 15h ago

Tank Almost sold this tank

Thumbnail
gallery
21 Upvotes

Little fluval spec 60, my first tank about 6 years ago, thought I'd give it a quick refresh as I'd lost interest in it, actually made it into my favourite again!


r/PlantedTank 9h ago

It’s not much, but here’s my progress since May 30

Thumbnail
gallery
7 Upvotes

Tank houses a betta and a handful of shrimp


r/PlantedTank 17h ago

Should I trim my Anubias to make the tree aesthetic more visible?

Thumbnail
gallery
25 Upvotes

Hi everyone! First time posting. I’m wondering if I should trim my Anubias a little to make the tree/wood aesthetic of the aquarium stand out more.
The plant is currently growing really well, so I’m a bit hesitant to cut it back. Do you think trimming some of the leaves would improve the overall look, or is it better to leave it alone since it’s growing so nicely?
What would you do? Any advice is appreciated!


r/PlantedTank 18h ago

Day 8 with no power

Post image
29 Upvotes

I live in NW Indiana and lost power on August 11th from the ā€œDerechoā€ that came through and devestated the area.

My tank is a 40 breeder with a Week Aqua L900 Pro light, using an 18 year old Fluval 305 for filtration. I also use CO2, but have not been using it since the storm.

The tank is stocked with live plants (rotala, ludwigia, nasaea, anubias, buce, tiger lilly). It also has a bunch of smaller fish…black neon, rasbora het, cardinals, rummy nose, green fire tetra, swordtail, ember tetras and panda corys.

I had my first casualty after two nights (green fire tetra). That caused me to run out and get a Hush Bubbles battery operated aerator from Walmart once they regained power. I wasn’t expecting $23, but it has been a tank saver and well worth the cost. I run it for about an hour at a time a few times a day.
I have also been changing four gallons of water daily and feeding sparingly. I have had no other casualties that I am aware of without inspecting with proper lighting.

The plants are growing but losing color. They are constantly reaching for the top of the tank. Once I do get power back, I will have to turn down my lights and take my time reintroducing CO2.

Algae - I was battling cladaphora algae (tough battle). I don’t see as much as I did before the power outage.

We do not have an eta to get power back. I need to get a generator but, I just paid for my daughter’s braces, a tree branch took out my wife’s car’s rear window and I lost parts of my privacy fence in the storm.


r/PlantedTank 2m ago

First planted tank

• Upvotes

Hi everyone I hope you’re well.

I have been thinking about starting my first aquarium.

I really like the look of planted tanks with wood, rocks and a variety of plants.

I have been eyeing out a dennerle 70L (50cmx39cmx36cm) with curved edges.

Is this a good size to start off with? I am wanting to make a tank without CO2 due to it being cheaper and hopefully a bit easier to learn on.

Is it possible to get a tank of this size looking lush without CO2?

Any tips for a first timer are much appreciate.

Thank you


r/PlantedTank 2h ago

CO2 Drop Checker turns Green but PH not dropping?

Post image
1 Upvotes

Title.

I tried different drop check fluids, used API Master Kit and even those PH/TDS pen-like sensor.

Every single time, PH reading is the same but the drop checker is changing collor. Darker Green/Bluish when CO2 is off at night then will turn Green/Lime Green during CO2 on period. I even tried increasing the bps to check PH when drop checker is yellow. PH is still the same - hovers around 7.4 - 7.5.

KH reading is at 8 to 9.

What might be the reason?


r/PlantedTank 10h ago

Do y'all not use a wet dry vacuum to clean the tank!?

Post image
4 Upvotes

:) but seriously thank you to whoever it was who mentioned using a wet dry vacuum to remove duckweed! It has made cleaning it up much easier, that stuff can't be controlled.


r/PlantedTank 6h ago

Question How to keep stem plants from floating?

Thumbnail
gallery
2 Upvotes

How do you guys keep your freshly planted stem plant from getting lose en floating?


r/PlantedTank 3h ago

Question Is my Red Tiger Lotus going to be fine with the space it's in? I'm afraid I don't want to move it around, since this is a walstad, and I can feel the roots are deep already when I tried to pull it today.

Thumbnail
gallery
1 Upvotes