The Planted Tank Forum banner

Kh fell through the bottom Help

945 Views 7 Replies 3 Participants Last post by  Whitesage
I had a lot of water parameter problems with my 13g tank and my shrimp were disappearing. I think it was the assasin snails. So I got the fluval flora tank for my shrimp (I couldn't find the shrimp one but pretty much identical). I have the fluval stratum substrate, no co2, several different plants, lava rock, mopani wood, a catappa log, lots of moss and a tantora mineral stone. I'm using api root tabs and flourish potassium. The shrimp are still hiding in the moss wall and they don't care for mulberry leaves or borneowild grow food. They are eating the hakari some but they are mostly cleaning the moss wall. There are 16 red cherries in the tank I never see more than 5.. I thought I was doing everything right. I went and got a carload full of distilled water. I'm using saltyshrimp mineral and seachem neutral.The water with just the saltyshrimp was high on ph, about 7.8 so I added the seachem and it's about 7.2 when i mix it up. The ph creeps up a bit in the tank though about 7.4. I'm getting a ph tester next week so I can be more accurate. Gh is perfect but here's the new baddy. Kh is bottomed out. I figure it's all the plant using up the potassium so I've been adding flourish potassium, but it's still low. I worry about using baking soda because I hear it raises ph. Ya'll have been so helpful through all these problems I hope you can tell me what to do about the Kh. You can see from the pics the hygrophilia is yellowing and the windlov is browning on the edges and so is the moss. The windelov looks worse today.


See less See more
1 - 8 of 8 Posts
i believe distilled water wont have a kh or wont have much of one. its a purified water so im betting that is why your readings are low. test you distilled to find out. as for the plants i bet your almost burning them with all the ferts in the tank. i dont use any kind of ferts so im not much help there sorry
yeah distilled kh must be very low. the windelov might be getting too much fert by the hygro leaves are yellowing i'm sure they aren't getting enough potassium. I think it's some kind of diatom on the moss wall thats making it brown and that would explain the shrimp hiding in it and ignoring the borneowild food. That still leaves me with too little potassium droping the kh. Does anyone recomend a way to raise it? Will baking powder raise the ph through the roof or will the seachem neutral take care of that?
distilled water is a filtered water like ro. the heat it and boil it to make it pure. pure water wont have kh. and i use ro water with o kh and all my java ferns are fine and all my other plants for that matter and i dont use any kind of fert. so i would almost bet you are over doing it in such a small tank and that can kill plants just like not enough
If you are not keeping any "exotic" shrimp but only RCS...then it's likely a mix between your messing/w the water, excess ferts like wicca suggested, and perhaps too high or too long on the lights.
Keep in mind that most chain store pet shops, though luck perhaps grants them A person who is somewhat knowledgeable, usually lacks people who are more than
curious about what they sell.
Point being they seldom have anything but the same tap water you have in those tanks. So those shrimp ae used to that. Things could be different as you may have
gone long and far to get the shrimp for example.
But changing to distilled water didn't just lower the PH it took out a lot of what shrimp need such as TDS which theoretically you put back.
I would suggest you test the tap water for PH and if it's not like 8..consider putting
it back as your water. But if so make the change by small(20-25%)water changes weekly. But till then I would start by doing a 50% WC now and not putting back any ferts till you read up on them as you don't have all needed ferts and missing components stop plant growth. BGA is next possibly. Learning how to use a fert calculator(first thread in the fert section) and using what ferts as are listed as "EI Low light/Weekly" would be my suggestion for that amount of plants/size tank.
You will find that title under "and I am dosing for" in that calculator.
I believe that full EI would be way excessive for your tank.
All plants take ferts from the water. Java fern should not have it's Rizome planted but
only the roots which hang down from it.
What light is on there and for how long ?
See less See more
The shrimp are from the Shrimp Farm. I'm assuming he probably has perfect water params. My tap water was ph 7.8 to 8.0 with 465 TDS and I was losing a lot of shrimp in my main tank. I'm cutting that water with distilled now and things are much better. Yes all of my ferns are tied to rocks or the mopani wood. My light is a fluval LED plant and it maybe on too long at 10 or so hrs. I'm dosing with api root tabs, 3 in an 8g tank which is a little under what they suggest. I use 6 or 7 in my 13g with no co2 and huge growth. I'm not too worried about the plants as I have 2 other tanks full of plants to replace any I may lose in the shrimp tank. I am using just distilled and adding saltyshrimp gh/kh and seachem neutral in the shrimp tank. Ph in that tank seems to be in the 7.4 or 7.5 range now with the neutral. Only the last few days have I added flourish potassium in an effort to raise the kh. It doesn't seem to affect kh at all though. I mix the water up in a 5 gallon bucket before water change and check it with tetra test strips. I ordered a ph meter and it should be in next week. My TDS measured 288 this morning. I'm doing w/c about 25% once a week. It is a new tank, instant cycled with bio-max from the other tanks and I was told that maybe why I'm having to add neutral regulator as ph is higher in the tank than when I mix it. My concern is the kh. I'm assuming it maybe the plants taking up too much potassium as I noticed some yellowing on the new hygro growth. It measures in the moderate range, 80ppm, a little darker in the make up water than in the tank so it's definitely losing potassium in the tank. It's not in the danger zone but I'm used to it being much higher in the main tank. I'm afraid of ph swings mainly at night. The shrimp hide in the moss most of the morning and only come out in the afternoons. They look fine then. I haven't seen any little floating bodies but I never see all 16 out at one time either. Really I hate messing with water chemistry at all and this is the 1st time I've ever had to use distilled as my old house had perfect well water. I REALLY don't want to add baking soda to the water as is suggested in a few articles. It raises ph and I'm perfectly comfortable with 7.4 or so as it is now. I'm just hoping someone in the forums may have a suggestion or seen this in one of their tanks.
See less See more
what is the neutral for? it is probably working backwards from when you add the gh/kh. if your using a mix of distilled and tap there is no need to use a remineralizer. if you are using all distilled then yes you need one.
no i'm using straight distilled in the problem shrimp tank. I'm mixing distilled and tap in the main tank now. The problems were too severe in the main tank with just tap. I had to move the rcs to a separate tank. The main tank is doing much better adding distilled but still way off for shrimp. Lol it may have been easier to do 1 part tap with 4 parts distilled in the shrimp tank. The neutral is for the ph in the shrimp tank it's getting in the 7.6 range without it and down to 7.2 or 7.4 with it. I thought the saltyshrimp kh/gh would keep it about 7 or 7.2 but it doesn't. I'm guessing at numbers from test strips until the ph meter comes in next week however. I use tetra 6 in 1 test strips but they seem accurate.
1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.